Super Blue Emperor Tetra (Inpaichthys kerri) – Tank-Bred

The Super Blue Emperor Tetra is a selectively bred aquarium form of Inpaichthys kerri, so the intense blue coloration of this variety should not be treated as a separate wild population. Understanding the habitat of the underlying species still gives us a useful blueprint for designing the aquarium.

Inpaichthys kerri originates from Brazil, within the upper Rio Aripuanã drainage of the Amazon basin. Its natural environment includes tropical freshwater habitats associated with forested waterways, where submerged vegetation, roots, branches, and organic material create structure and cover.

These surroundings help explain why Super Blue Emperor Tetras look and behave particularly well in planted aquariums. They benefit from protected areas around plants and hardscape while still having open horizontal swimming space where the group can move and interact.

The goal does not need to be an exact Amazon biotope. A mature aquarium that combines clean, stable water, plant cover, subdued areas, and unobstructed swimming room recreates the important functional elements of their natural environment while allowing the brilliant blue coloration of this Tank-Bred variety to remain the visual focus.

Super Blue Emperor Tetras look their best in a lushly planted aquarium with darker areas around the edges and open swimming space through the center. The goal is to create enough structure for individual fish to move in and out of cover without turning the entire aquarium into a wall of plants.

Use taller plants such as Vallisneria, Water Sprite, and stem plants along the back and sides of the aquarium. Cryptocoryne, Anubias, and Java Fern can fill the middle and lower portions of the aquascape. Floating plants can also help soften overhead lighting, which can make the metallic blue and violet coloration of Inpaichthys kerri appear especially striking.

Pieces of branching driftwood can be used to break up sight lines while leaving plenty of horizontal swimming room. A darker substrate or background provides additional contrast against the Super Blue Emperor Tetra's reflective coloration.

A modest amount of leaf litter or other tannin-producing botanicals can work well with this species, particularly when creating a more natural Amazon-inspired aquarium. Aquatic Arts Botanical Combo Packs or Tannin Tea Bags can be used to introduce some of these elements without requiring the aquarium to become an extreme blackwater setup.

Think of the finished aquarium as having three functional areas: plant-covered retreats around the perimeter, hardscape that breaks up sight lines, and an open middle swimming area where the group can move and display together. This gives the fish security without hiding one of the main reasons for keeping them: that incredible blue group display.

Super Blue Emperor Tetras (Inpaichthys kerri) are omnivorous micropredators that do best with a varied diet built around appropriately sized foods. Their relatively small mouths make food size just as important as the type of food being offered.

A quality micro pellet or finely crushed flake food works well as the everyday staple. Supplement this with frozen or live foods such as baby brine shrimp, daphnia, moina, cyclops, and finely sized bloodworms. Offering a mixture of prepared and animal-based foods provides better dietary variety than relying on flakes alone.

Live foods such as baby brine shrimp, daphnia, and moina are particularly useful for encouraging natural feeding behavior and can be valuable when conditioning adults for breeding. These small foods remain suspended in the water long enough for the tetras to actively pursue them.

Feed small portions once or twice daily, offering only what the group can consume within a short period. In larger community aquariums, watch the group during feeding to make sure these smaller tetras are actually receiving food rather than losing it to larger or more aggressive feeders.

Super Blue Emperor Tetras (Inpaichthys kerri) are peaceful community fish, but choosing tank mates should be based on more than simply finding other species labeled “peaceful.” The best companions share similar water requirements, are not large enough to view them as prey, and will not overwhelm them during feeding.

Other small tetras can work particularly well because they share similar activity levels and occupy comparable water conditions. Species such as Ember Tetras, Lemon Tetras, and other appropriately sized peaceful tetras can create a lively community, although the aquarium should be large enough for each species to maintain a proper group.

Small rasboras are another good option. Their peaceful temperament and relatively small size make them unlikely to intimidate Super Blue Emperor Tetras, while their different swimming and grouping behaviors can add variety to a planted community aquarium.

Corydoras catfish can be excellent companions when the chosen species shares compatible temperature and water requirements. Corydoras spend most of their time along the bottom, while Inpaichthys kerri primarily uses the middle portions of the aquarium, reducing competition for swimming space.

Otocinclus Catfish can also fit well in a mature planted aquarium. They primarily spend their time grazing surfaces rather than competing with the tetras for territory, although Otocinclus should only be added to an established aquarium capable of supporting their specialized grazing behavior.

Avoid large predatory fish, aggressive cichlids, persistent fin nippers, and highly competitive feeders that may prevent these smaller tetras from eating properly.

Most importantly, do not sacrifice the Super Blue Emperor Tetra's own group size simply to add more species. A larger group of Inpaichthys kerri will usually produce more natural social behavior, stronger group movement, and a more impressive display than keeping only a few individuals alongside many different species.

Shrimp Safe: Yes, With Adult Shrimp

Super Blue Emperor Tetras (Inpaichthys kerri) can be kept with freshwater shrimp, but they should not be considered completely shrimp-safe. Their small size makes adult shrimp poor targets, while newly hatched and very small shrimplets are much more likely to be viewed as food.

Adult Neocaridina Shrimp and Caridina Shrimp can generally coexist with these tetras when their water requirements overlap. Amano Shrimp are an especially practical choice because their larger adult size makes them less vulnerable. Larger filter-feeding species such as Bamboo Shrimp and Vampire Shrimp are also generally too large to be considered prey.

Shrimplets are a different story. Inpaichthys kerri naturally investigates and consumes small foods in the water column, and a tiny shrimp moving through the aquarium can attract the same feeding response. Java Moss, Subwassertang, Guppy Grass, dense stem plants, floating roots, and other complex cover can give young shrimp places the tetras cannot easily reach.

If the goal is simply to keep adult shrimp as part of a planted community aquarium, Super Blue Emperor Tetras can be a good option. If the goal is to produce and retain the largest possible number of shrimplets, a dedicated shrimp aquarium remains the better choice.

Super Blue Emperor Tetras (Inpaichthys kerri) are egg-scattering tetras rather than livebearers, and they provide no parental care to their eggs or fry. Healthy, well-conditioned adults may spawn in a mature planted aquarium, although intentionally raising fry is much more successful when breeding is managed separately.

Males typically develop stronger coloration and display more actively toward females and other males. Conditioning adults with a varied diet that includes baby brine shrimp, daphnia, moina, and other appropriately sized live or frozen foods can help prepare them for spawning.

Eggs may be scattered among Java Moss, other fine-leaved plants, or spawning mops. Because adults may consume both eggs and newly hatched fry, breeders attempting to raise larger numbers should separate the adults from the eggs after spawning or move the spawning material to a dedicated rearing aquarium.

The newly hatched fry are extremely small and require appropriately sized first foods. Infusoria or other microscopic foods may be necessary initially, followed by newly hatched baby brine shrimp and other small live foods as the fry grow large enough to accept them.

Because the Super Blue Emperor Tetra is a selectively bred color form, offspring may show variation in the intensity and distribution of the blue coloration. Aquarists interested in maintaining the Super Blue characteristics should select breeding adults carefully and avoid crossing the line with standard Inpaichthys kerri if preserving the Super Blue form is the goal.

What is a Super Blue Emperor Tetra?

The Super Blue Emperor Tetra (Inpaichthys kerri) is a selectively bred form of the Blue Emperor Tetra developed for especially intense blue to violet-blue coloration. It is a small, social freshwater tetra well suited to planted community aquariums.

Is the Super Blue Emperor Tetra the same as the Emperor Tetra?

No. The Super Blue Emperor Tetra is Inpaichthys kerri, while the fish commonly called the Emperor Tetra is Nematobrycon palmeri. They are separate species despite sharing the Emperor Tetra name.

Is the Super Blue Emperor Tetra Tank-Bred?

Yes. The Super Blue Emperor Tetras offered by Aquatic Arts are Tank-Bred.

How big do Super Blue Emperor Tetras get?

Adult Super Blue Emperor Tetras generally reach approximately 1.5 to 2 inches. Their small adult size makes them suitable for planted community aquariums containing other appropriately sized peaceful species.

What size aquarium does a Super Blue Emperor Tetra need?

We recommend a 15-gallon aquarium or larger because Inpaichthys kerri should be maintained as a group. A longer aquarium footprint provides additional horizontal swimming room and space for natural social interactions.

Are Super Blue Emperor Tetras schooling fish?

Yes. Super Blue Emperor Tetras are social tetras that should be maintained in a group. Their grouping can sometimes appear looser than the tightly synchronized schooling behavior associated with certain other tetra species.

How many Super Blue Emperor Tetras should I keep together?

Keep at least six Super Blue Emperor Tetras together, with a larger group preferred when aquarium size allows. Larger groups provide more opportunities for natural social interactions and create a much more impressive blue display.

Can I keep just one Super Blue Emperor Tetra?

We do not recommend keeping Inpaichthys kerri alone. This is a social species, and maintaining a proper group allows the fish to interact and behave more naturally.

Are male and female Super Blue Emperor Tetras different?

Yes. Mature males generally develop stronger coloration, while females tend to have a fuller body and more subdued coloration. Differences become easier to recognize as the fish mature.

Why isn't my Super Blue Emperor Tetra as blue as the pictures?

Age, sex, maturity, stress, aquarium lighting, background, diet, and acclimation can all influence how blue a Super Blue Emperor Tetra appears. Young or recently shipped fish may not immediately display the coloration seen in settled mature adults.

Do Super Blue Emperor Tetras become more colorful as they mature?

Yes. Young Inpaichthys kerri may continue developing stronger coloration as they mature. Mature males are generally the most intensely colored members of the group.

What water parameters are best for Super Blue Emperor Tetras?

A good range is approximately 72 to 79°F, pH 5.5 to 7.5, GH 3 to 12 dGH, and KH 1 to 8 dKH. Clean, stable water is more important than repeatedly adjusting the aquarium to achieve one exact number.

Do Super Blue Emperor Tetras need soft water?

They can do very well in slightly soft to moderately mineralized freshwater. Tank-Bred fish can be adaptable, but sudden changes in water chemistry should still be avoided.

Do Super Blue Emperor Tetras need a planted aquarium?

Live plants are not strictly required, but a planted aquarium is highly recommended. Plants provide security and broken sight lines while leaving open areas where the group can swim and interact.

Do Super Blue Emperor Tetras like tannins and botanicals?

A modest amount of leaf litter or other aquarium-safe botanicals can be appropriate for Inpaichthys kerri. They can provide additional cover and tannins without requiring the aquarium to be maintained as an extreme blackwater system.

What do Super Blue Emperor Tetras eat?

Super Blue Emperor Tetras are omnivorous micropredators. Feed a varied diet containing quality micro pellets or finely crushed flakes along with appropriately sized frozen and live foods.

What live foods can Super Blue Emperor Tetras eat?

Baby brine shrimp, daphnia, moina, cyclops, and other appropriately sized live foods are excellent choices. Their small mouths should always be considered when selecting food size.

How often should I feed Super Blue Emperor Tetras?

Small portions once or twice per day work well for most aquariums. Feed only what the group can consume within a short period and make sure larger community fish are not preventing them from reaching food.

Are Super Blue Emperor Tetras peaceful?

Yes. Inpaichthys kerri is generally a peaceful community species. Normal social interactions and displaying between individuals should not automatically be confused with serious aggression.

What are good tank mates for Super Blue Emperor Tetras?

Other small peaceful tetras, small rasboras, compatible Corydoras, and Otocinclus can make good companions. These fish are appropriate for different reasons, including similar water requirements, peaceful behavior, small adult size, or use of different swimming zones.

Can Super Blue Emperor Tetras live with Corydoras?

Yes. Compatible Corydoras can work especially well because they primarily occupy the bottom of the aquarium while Super Blue Emperor Tetras spend much of their time in the middle portions of the tank.

Can Super Blue Emperor Tetras live with Otocinclus?

Yes. Otocinclus can be good companions in a mature planted aquarium. They spend much of their time grazing surfaces rather than competing with Inpaichthys kerri for swimming territory.

Can Super Blue Emperor Tetras live with bettas?

This combination should be approached cautiously. Individual betta temperament varies, and differences in activity level, feeding behavior, and territorial behavior can make the combination less predictable than keeping Super Blue Emperor Tetras with small peaceful schooling fish.

Can Super Blue Emperor Tetras live with Neocaridina Shrimp?

Adult Neocaridina Shrimp can generally coexist with Super Blue Emperor Tetras when their water requirements overlap. Newly hatched shrimplets are small enough to be eaten and should not be considered safe.

Are Super Blue Emperor Tetras safe with Amano Shrimp?

Adult Amano Shrimp are generally a good choice because their larger size makes them much less likely to be viewed as prey by Inpaichthys kerri.

Will Super Blue Emperor Tetras eat baby shrimp?

They may. A tiny shrimplet can trigger the same feeding response as other small live foods. Dense moss and fine plant growth can improve shrimplet survival, but a dedicated shrimp aquarium is better when maximizing reproduction is the goal.

How do Super Blue Emperor Tetras breed?

Super Blue Emperor Tetras are egg-scattering fish. Adults may scatter eggs among fine plants, moss, or spawning material and provide no parental care afterward.

Will Super Blue Emperor Tetras eat their eggs?

They can. Adults may consume eggs and newly hatched fry, which is why breeders commonly separate the adults from the spawning area or move the eggs and spawning material to a separate aquarium.

What do Super Blue Emperor Tetra fry eat?

Newly hatched fry are extremely small and may initially require infusoria or similarly microscopic foods. As they grow, they can progress to newly hatched baby brine shrimp and other appropriately sized foods.

Will every Super Blue Emperor Tetra offspring be equally blue?

Not necessarily. The Super Blue Emperor Tetra is a selectively bred form, so offspring can show differences in coloration and intensity. Maintaining the Super Blue characteristics requires careful selection of breeding fish.

Can Super Blue Emperor Tetras breed with regular Inpaichthys kerri?

Because the Super Blue form is still Inpaichthys kerri, it should be treated as capable of breeding with standard forms of the same species. If maintaining the Super Blue line is important, the different forms should not be intentionally mixed for breeding.

Every Super Blue Emperor Tetra (Inpaichthys kerri) is carefully observed, conditioned, and prepared for shipment by our experienced Aquatic Arts team.

Your fish are covered by our 100% Live Arrival Guarantee. We use insulated shipping boxes and appropriate heat or cold packs when weather conditions require them to help protect your fish during transit.

Super Blue Emperor Tetras may appear paler or more subdued immediately after shipping, and their characteristic blue coloration may not be fully visible when they first arrive. Give them time to acclimate and settle into their new aquarium. Color and normal social behavior should become more apparent as the fish become comfortable with their surroundings.

If there is a problem with your shipment, please follow the reporting instructions on our Refund Policy & Live Arrival Guarantee page and submit the required information.

Our Aquatic Arts team is here to help with questions about acclimation, care, or your new Super Blue Emperor Tetras.

Best Fishes,

The Aquatic Arts Team