Like I said, low temperature and land areas are 100% necisarry for long term well-being of Firebelly Newts. If you only have one, you can keep it in a 2.5g if you can keep it clean and regulate the temperature. But the situation the Newt is in now does not have happy ending, and may end in the death of one of the Cichlids as well. They don't have that orange belly for show... it's aposamatic coloration, just like a Coral Snake, it warns that it's very poisonous. They can even cause a human to get very sick and throw up if you swallow enough of it... Imagine what eating the whole Newt would do to a small fish. And besides, how would a slow Newt compete for food with large, aggressive Cichlids? Please... do the right thing... FB Newts can live for 20 years under the right care. Please strive for that