A+++ on this feeding trough....at this moment all i hve is a mystery wrasse in my tank.....as soon as i put sme mysis in it my wrasse went in straight and started feeding on em....i dnt hve any sea horses but i thing u can use this for any small fishes...no left over decaying anywhere in the tank...if fish dnt eat all snail will get in their and do the job....highly recommend it