Best invertebrate for freshwater tanks

9 species in this category on Fishori. Open a profile for tank size, temperament, then run pair checks before mixing.

Inverts are shrimp and snails. They are not just cleanup crew. A shrimp colony is its own stocking decision: tank chemistry, copper exposure, mature biofilm, and what eats them all matter more than how many algae spots there are. Most community fish will eat shrimplets and some will pick off moulting adults. Snails come with their own rules. Nerites need brackish water to actually breed, mystery snails need open lids and calcium, assassin snails will not eat algae but will eat your other snails. Plan inverts before the rest of the tank, not after.