Pea Puffer tank mates
A 3 cm puffer with a beak built for snails and small shrimp. Nips fins on principle; most working setups are species-only. Any community plan needs every tank mate vetted by behaviour, not just litres.
Common mistakeAdding one male pea puffer to a community ‘for snail control’ is how keepers invent chronic fin-nipping. It will harass tank mates whether snails remain or not. Keep a species tank or a carefully planned puffer group with dense cover — not a mixed tetra community with a novelty hunter.
Each name below opens a pair check with Pea Puffer. That check is the decision, not the list itself.
Usually safer companions
Conservative shortlist from this profile. Open a pair page before you buy.
None listed here. Use the pair checker with species you are considering.
Risky or situational
May work with more water, a mature system, or a species-only setup. Read the pair page before you experiment.
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Betta is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Pea Puffer. Run the pair checker before stocking.
Both species defend territory. The pairing needs a long footprint and rockwork or planting that breaks the sightline between two defended spots. Run the pair checker before stocking.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Fish to avoid with Pea Puffer
Predation, aggression, or space rules on this profile. Treat these as poor default mixes.
Amano Shrimp conflicts with Pea Puffer on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.
Tank size and groups
- Published minimum for Pea Puffer: 40L. Group minimum 6 .
- Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other. That is why pair checks include tank context, not only temperament.
- Nearest litre hub to this minimum: 40L hub.
Easier alternatives to consider
Hardier first-tank names from the library. Still read the profile. Not a substitute for reading this one.
Plan before you buy
Start a pair check with Pea Puffer, or open a starter plan with the top safer companions in the builder.
Tank hubs: 40L
Related reading
Guides that list other fish with the same trait, so you can plan around the group rather than one row.
- Fin-nipping fish →
Pea Puffer is on this list. Matters more with long-finned tank mates.
- Fish that eat smaller tank mates →
Pea Puffer may eat anything that fits in its mouth as it grows.
- Schooling & group fish →
Plan the group of 6+ before choosing tank mates.
Filtration & heating
A 40L minimum tank for Pea Puffer needs a filter rated for at least 160L/hr turnover and a heater maintaining 24–28°C.
Similar fish (same category)
- American Flagfish · min 60L
- Clown Killifish · min 20L
- Marbled Hatchetfish · min 60L
- Golden Wonder Killifish · min 80L
- African freshwater butterflyfish · min 150L
- Ropefish / reed fish · min 200L
- Senegal bichir · min 300L
- Black ghost knifefish · min 500L
Featured compatibility checks
Curated pair pages for Pea Puffer. Each opens a full verdict — not just a list label.
Pea Puffer tank mates — quick answers
- What fish can live with Pea Puffer?
- This hub has no “usually safer” (GOOD) companions for Pea Puffer. Workable neighbours sit in caution — for example Betta, Bristlenose Pleco, Chili Rasbora, Corydoras Catfish, Guppy, Neon Tetra. Treat every name as a pair check, not a shopping list.
- What tank mates should you avoid with Pea Puffer?
- Avoid Amano Shrimp based on size, temperament, or predation risk on this profile.
- What size tank do Pea Puffer need for a community?
- 40L is the planning floor for adult swimming space and bioload. A 49L+ tank is the more comfortable long-term footprint. Length and depth matter as much as raw litres for active or territorial fish.