Asia
Asian Stone Catfish
Hara jerdoni
Temp18–24°C
pH5.6–7.6
Size3 cm
DietOmnivore
Swim—
DifficultyModerate
Asian Stone Catfish
Hara jerdoni
Starting Small? Find the perfect fish for your nano tank.
Showing fish with recommended minimum tank size up to 5 gallon.
Nano-safe
Nano-safe
Asia
Malabar pufferfish
Carinotetraodon travancoricus
Temp22–28°C
pH6.8–8
Size2.5 cm
DietCarnivore
Swim—
DifficultyExpert
Malabar pufferfish
Carinotetraodon travancoricus
Nano-safe
Taiwan (selectively bred)
Rili Shrimp
Neocaridina davidi var. rili
Temp18–28°C
pH6.5–8
Size3 cm
DietOmnivore
Swim—
DifficultyEasy
Rili Shrimp
Neocaridina davidi var. rili
Nano-safe
Taiwan (selectively bred)
Yellow Shrimp
Neocaridina davidi var. yellow
Temp18–28°C
pH6.5–8
Size3 cm
DietOmnivore
Swim—
DifficultyEasy
Yellow Shrimp
Neocaridina davidi var. yellow
Nano-safe
Taiwan (selectively bred)
Blue Velvet Shrimp
Neocaridina davidi var. blue
Temp18–28°C
pH6.5–8
Size3 cm
DietOmnivore
Swim—
DifficultyModerate
Blue Velvet Shrimp
Neocaridina davidi var. blue
Best Fish for Nano Tanks
Small aquariums are less forgiving, so prioritize peaceful species with low bioload and stable group behavior.
Match fish to realistic tank volume after substrate and hardscape displacement, not label volume alone.
Keep stocking conservative and maintain consistent water-change routines for long-term stability.