hello, i am wondering how many adult bumblebee cichlids are compatible (if they are compatible with eachother) in a 55 gallon tank, i am also wondering if any synodontis catfish (4 inches and above) and raphael catfish are compatible with bumblebee cichlid. i have an aquatech 30-60 filter and a marineland penguin 550, are these good filters for these cichlids? can bumblebee cichlid get malawi bloat? do bumblebee cichlids breed often? (i need to know because i do not want fry) and what cover should i provide for the catfish if any are compatible? thanks!