I have a baby frontosa who has not been eating lately and just seems down all the time. When the light is on, he usually stays in one place in the tank and is always breathing deeply (i can see his mouth opening and closing if that makes sense..) When i turn the light off he swims around a little bit but still ends up in the same spot. Hes always towards the bottom of the tank, most of the times it looks like he literally laying on the gravel. When i put food in the tank he will eat it and just spit it back out. Ive tried feeding him all types of pellets and flakes. He used to eat the flakes but now he is spitting them out. He looks alot skinnier than before and im very worried. It all started when I bought a new fish a few weeks ago. Its a jewel about the same size as my frontosa (1.5'') although hes getting bigger because hes been eating more. I fed them guppies yesterday and the frontosa was able to get one and the jewel had between 7 or 10. He is alot more aggressive than my frontosa and im worried this might be the problem. I dont see him getting "beat up," i do see them chase eachother every once in a while it looks like they snap at eachother i dont know if its playing or if its something more serious.. I dont know if i should get rid of the jewel or buy a divider for my tank. I have a 15 gallon tank and i use a bubbler to have more oxygen and make it feel as if it were bigger. The water has been tested and it is fine and I do water changes weekly. someone PLEASE HELP ME SAVE MY BABY. I just put a rock in the tank to create more hiding spaces and changed the arrangement around (for now). Do i get rid of the jewel or could there be something else wrong with my frontosa? PLEASE HELP.