What size tank does Pea Puffer need?

Pea Puffer needs at least 10 gallons before tank mates or bioload are added; larger groups and active fish need more room.

What water parameters does Pea Puffer need?

Keep Pea Puffer at 74-82F, pH 6.8-7.8, GH 5-15 dGH, and KH 2-8 dKH.

Is Pea Puffer good for beginners?

Pea Puffer is rated advanced for beginners. Match its tank size, water parameters, and temperament before choosing tank mates.

What do Pea Puffer eat?

Pea Puffer diet is listed as carnivore, snail eater. Feed a varied aquarium diet suited to that category.

How many Pea Puffer should be kept together?

Keep Pea Puffer singly unless a species-specific plan says otherwise. Social behavior: species tank or managed group.

Can Pea Puffer live with shrimp?

No. Pea Puffer is marked unsafe with dwarf shrimp and may prey on adults or shrimplets.

Can Pea Puffer live with bettas?

No. Pea Puffer and Betta need at least 10 gallons, with normal group sizes handled. Pea Puffer is prey-sized compared with adult Betta.

Pea Puffer

Carinotetraodon travancoricus compatibility profile. Find the best tank mates by checking water parameters, aquarium swim zone pressure, social rules, and shrimp-safe verifications.

Core facts & bioload limits

Adult size1"

Minimum tank10 gal

Temperamentaggressive

Group1+

temperature74-82F
pH6.8-7.8
water_hardnessGH 5-15 dGH | KH 2-8 dKH
plant_safetysafe
shrimp_safetyunsafe
algae_eating_rolenone
beginner_suitabilityadvanced

Planning tools

Fish Compatibility CheckerCheck Pea Puffer against a selected tank mate.Aquarium Stocking CalculatorEstimate Pea Puffer bioload and group-size pressure.Water Parameter MatcherCompare Pea Puffer with your temperature, pH, GH, and KH.

Species resources

Pea Puffer water parameters

Community planning & swim zone pressure

When planning a community around Pea Puffer, consider the aquarium swim zone pressure. This species primarily occupies the middlebottom zone. Balance the setup by choosing tank mates that occupy the top or bottom zones to reduce crowding and stress.

2026 smart aquarium and aquascape planning for Pea Puffer

Can you keep Pea Puffer in a 5-gallon paludarium setup?

Pea Puffer needs closer to 10 gallons, so a 5-gallon paludarium is not the right baseline.

Walstad method stocking limits for Pea Puffer in nano aquariums

A Walstad-style setup can help plant growth, but it does not erase adult size, group-size, oxygen, or feeding waste limits. Use the stocking calculator before adding tank mates.

Does Pea Puffer need programmable LED sunrise/sunset lighting?

Programmable sunrise and sunset ramps are optional, but gradual lighting can reduce startle behavior in tanks with open swimming lanes or skittish community fish.

Ideal smart heater temperature parameters for Pea Puffer breeding

Keep the heater inside the listed range of 74-82F; breeding attempts should favor stability over chasing the warmest possible number.

How high water flow from modern powerheads affects Pea Puffer

Match flow to swim zone and body shape. If Pea Puffer avoids open water, clamps fins, or hides behind hardscape, reduce direct current and add calmer feeding areas.

Best natural biotope tank mates for Pea Puffer

Favor tank mates with overlapping temperature, pH, hardness, temperament, and swim-zone use instead of mixing fish only because they share a broad region or store display tank.

Will Pea Puffer uproot carpet plants in a Dutch style aquascape?

Plant safety is marked as safe. Even plant-safe fish can disturb carpets if they dig, graze aggressively, or crowd the foreground during feeding.

Blackwater botanical setups for Pea Puffer stress relief

Use botanicals only when the softer, tinted-water style fits the species water range. Keep pH and hardness inside the listed limits instead of dropping them quickly for appearance.

Minimalist Iwagumi aquascape stocking ideas featuring Pea Puffer

Iwagumi layouts leave fewer visual barriers, so choose peaceful tank mates and avoid territorial species that need caves, dense stems, or broken sightlines.

Skittles shrimp tank mates that won't eat fry in a 10-gallon

For shrimp-heavy nano tanks, treat Pea Puffer as unsafe with dwarf shrimp and add moss or fine plants if shrimplet survival matters.

Care caveats

notesTiny freshwater puffer with an outsized personality; species-only or very carefully planned tanks only.
caveatPlan a species-only or single-species-focused setup with heavy planting and sightline breaks; most community attempts end in nipped fins or stressed tankmates.
caveatBites fins and harasses slow or long-finned tankmates; do not mix with bettas, gouramis, guppies, or other long-finned species.
caveatNeeds meaty foods (live or frozen bloodworms, daphnia, small invertebrates) — does not thrive on flake; appetite drives much of its hunting behavior.
caveatDwarf shrimp and most snails are prey, not tankmates; pea puffers are often used specifically to manage pest snail populations and will eventually eat ornamental snails too.

Conditional tank mates

No green matches are currently published for this species. These yellow matches may work only when the warnings are handled, especially temperature range, group size, flow, and stocking density.