Pea Puffer
The world's smallest pufferfish — a 2.5 cm murder bean with helicopter-like maneuverability and a beak that NEVER stops growing. Those independently-moving eyes, that helicopter-like hovering, that adorable face that hides a ruthless snail-killing machine. Complete guide: the snail diet that's MANDATORY for life, why they must be kept ALONE, and the beak-trimming crisis.
📋 Species Overview
⚠️ Snail Diet — MANDATORY for Life
Pea Puffers have beaks (fused teeth) that NEVER stop growing — like all pufferfish. In the wild, they wear down their beaks by constantly crunching snail shells. In captivity, you MUST provide a constant supply of small snails (ramshorn, bladder, Malaysian trumpet) — or the beak will overgrow, preventing the puffer from eating, leading to starvation and death. Beak trimming is possible but extremely difficult on a 2.5 cm fish. Prevention through snail diet is the ONLY safe approach. Set up a separate snail breeding tank BEFORE getting a Pea Puffer.
🔪 Aggressive Despite Size — Species-Only Tank
Pea Puffers are ruthlessly aggressive despite their tiny size. They will nip fins, attack tankmates, and kill shrimp and snails (obviously). Best kept ALONE in a heavily planted 19L/5gal tank. Some keepers successfully maintain groups (1M:2-3F) in 75L+ heavily planted tanks, but aggression is always a risk. They're intelligent, interactive, and recognize their owners — often "begging" at the glass.