name: freshwater angelfish - pterophyllum
family: cichlidae
greatly laterally compressed.
attractive triangular shape.
plays well with others. (sometimes)
monogamous, ambush predators.
likes: submerged log, flattened leaf
dislikes: bigger fishies

discus fish -
symphysodon aequifasciatus
family: cichlidae
laterally compressed, extended finnage absent
highly social, produces
"discus milk" thru skin
likes: egg yolk, brine shrimp
dislikes: low-water season

atlantic salmon - salmo salar
family: salmonidae
aggressive, territorial
eggs shaped like
the moon which may be why they
follow it around
likes: being delicious
dislikes: being eaten, beaver dams