A few days ago my pink convict and texas c became really good friends. They stick together and are very nice, they keep the other convicts in top corners of the tank. Anyways, the pink and texas came to the front of the tank to great me as always, and I noticed her/his tummy is yellow on the lower half. Does this mean anything? She looks fine other wise. The texas is around 2 inches long and the pink c is probably an inch and a half.