Symphysodon

Symphysodon

All Symphysodon species have a laterally compressed body shape. , however, extended finnage is absent giving Symphysodon a more rounded shape. It is this body shape from which their common name, “discus”, is derived. The sides of the fish are frequently patterned in shades of green, red, brown, and blue. The height and length of the grown fish are both about 20–25 cm (8–10 in).

Nudibranch

Nudibranch

A nudibranch is a member of what is now a taxonomic clade now, rather than a fish. Nudibranchs are often casually called “sea slugs“, a non-scientific term. This has led some people to assume that every sea slug must be a nudibranch. Nudibranchs are very numerous in terms of species, and are often very attractive and noticeable. Among this group can be found the most colorful creatures on earth.