its not a monster but my emerald cory will not eat he is in a 20 gallon?could it possibly be the really agressive blue phantom plec i transfered from the monster tank wich houses my red tail payaras and barracudas(there was also a 7 inc juruense but i lost him to one of the payaras) i have tryed flakes and shrimp pellets also there are no plants but i will be getting some