Let me toot the horn for the African dwarf frogs,i love these funny guys.They`re such easy keepers and carry no diseases to your fish.They have tiny little mouths that only munch on food(blood worms,daphinia and baby brime shrimp.They hid most of the day unless your home is quiet like mine.Then they start their show.My male loves to hang onto the thermometer with one foot and sorta just hang around.They bolt to the surface for air then takes a crash dive into the substrate Mine have just started following my finger up the side of the tank.If they are sitting near the side of the tank just slowly move your finger up and they`ll follow it til the fall over I love seeing them just sorta floating mid tank,lol it`s like they`re dead They also like to hang onto floating live plants at the top of the tank.I`m not kidding these things are so hillarious my mom will be in the room by herself and just burst out laughing at them.Oh well thats my sales pitch for the froggies.So i have decided to get a pair for all my shallow tanks.They get along with ALL fish.Just give them a cave or something to burrow under like mine have their driftwood.