Any species of similar size and peaceful temperament like this fish type is its suitable tankmate. But some of the best picks are otocinclus catfish, bettas, tetras, swordtails, mollies, cherry barbs, fancy guppies, angelfish, hatchetfish, zebra danio, amano shrimps, red cherry shrimps, ghost shrimps, gold inca snails, ivory snails, mystery snails, ramshorn snails, pond snails, malaysian trumpet snails, rabbit snails, japanese trapdoor snails and nerite snails. You must be careful about keeping these as tankmates. Goldfish: If the cory is of similar size to the goldfish, this may work out. As soon as the goldfish grows bigger, it might prey on your cory. Cichlids: Most cichlids are aggressive, and they feed on smaller fish. So, don't keep them together.