Let me begin with tanks and fish occupying them.
55g 2oscar, sun cat, common pleco, black shark
29g 1 blood parrot, 3 jewel cichlids , 1 synodontis eupterus, 2dojo loaches, 3clown loach, recently added 2 convict cichlids--- heard they do very well with jewel cichlids
30g community guppies...