I'm planning to breed assassin snails in a 20g tank with sand substrate, driftwoods, mosses and school of 10 tetras and 10 kuhli loaches. I heard that assassin snails tend to hide under the sand waiting for its prey. I'm just wondering if they would also prey on fishes. Also if the kuhlis will prey on the snails. I know that loaches eat snails but I use to have 3 kuhlis living with nerites and they don't seem to pay any attention on them, probably because of their size and number. I'm just wondering if the assassins can still breed with school of kuhlis swarming around. Is the coexisting of these 2 species compatible? Is it a good idea or what? Any suggestions will be deeply appreciated. Thanks..