The Order Anguilliformes, or true eels, contains 20 families and about 820 species.
Species are usually long and slender, with long-based dorsal and anal fins that are continuous with the caudal fin
also called mail-cheeked fish, any one of a group of bony fishes that are characterized by a plate of bone running across each cheek.
an order or superorder of ray-finned fish.If considered a single order, they are the most numerous order of vertebrates, containing about 41% of all bony fish.Perciformes means "perch-like".
An order of specialized teleost fishes that includes the triggerfishes, puffers, trunkfishes, and ocean sunfishes
include seahorses, pipefishes, seadragons, ghostpipefishes, flutemouths, trumpetfishes, snipefishes and other related groups. The order comprises six families and more than 370 species. These fishes
The Decapoda (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish, crabs, lobsters, prawns, and shrimp.
commonly known as the sacoglossans or the "sap-sucking sea slugs", are a clade of small sea slugs and sea snails, marine gastropod mollusks. Sacoglossans live by ingesting the cellular contents of alg
head shield slugs, is distinguished by the presence of a flattened cephalic shield, presumably evolved for burrowing. The shell may be well developed, reduced, internal, or absent.
The name nudibranch is appropriate, since the dorids (infraclass Anthobranchia) breathe through a "naked gill" shaped into branchial plumes in a rosette on their backs. By contrast, on the back of the
marine mollusks including the squids, cuttlefishes, and octopuses that move by expelling water from a tubular siphon under the head and that have a group of muscular usually sucker-bearing arms around