Can Otocinclus Catfish Live With Pea Puffer?
❌Not Compatible
Pea Puffer is aggressive and will likely attack or stress tank mates.
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Parameter Comparison
| Parameter | Otocinclus Catfish | Pea Puffer | Overlap |
|---|---|---|---|
| Temperature | 72–79°F | 74–82°F | 74–79°F ✓ |
| pH Range | 6–7.5 | 7–8 | 7–7.5 ✓ |
| Temperament | peaceful | aggressive | Aggression risk ✗ |
| Max Size | 2" | 1" | Similar ✓ |
| Min Tank Size | 10 gal | 5 gal | 10 gal minimum together |
| Diet | Herbivore | Carnivore | — |
| Care Level | intermediate | intermediate | — |
Species Profiles
Otocinclus Catfish
Otocinclus spp.
intermediatepeaceful10+ gal
Otocinclus catfish (otos) are tiny, peaceful algae eaters that are incredibly effective at controlling soft green algae and diatoms in planted tanks. They are the gold standard for planted tank algae control, often preferred over larger plecos. However, they are somewhat delicate and require established, well-maintained aquariums.
Full care guide →Pea Puffer
Carinotetraodon travancoricus
intermediateaggressive5+ gal
Pea puffers are the smallest freshwater pufferfish in the world, growing to just 1 inch. Despite their tiny size, they have big personalities — they are curious, intelligent, and surprisingly aggressive. They are best kept in species-only tanks and require live or frozen food.
Full care guide →Other Compatible Tank Mates
For Otocinclus Catfish:
For Pea Puffer:
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