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Having abdominal fins; belonging to the Abdominales; as, abdominal fishes. Abdominal ring (Anat.), a fancied ringlike opening on each side of the abdomen, external and superior to the pubes; -- called also inguinal ring.

A group including the greater part of fresh-water fishes, and many marine ones, having the ventral fins under the abdomen behind the pectorals.

A small fresh-water fish (Leuciscus alburnus); the bleak.

A group of Coelenterata, including the Medusæ or jellyfishes, and hydroids; -- so called from the stinging power they possess. Sometimes called sea nettles.

Belonging to or resembling the Acalephæ or jellyfishes.

A group of teleostean fishes having spiny fins. See Acanthopterygii.

Belonging to the order of fishes having spinose fins, as the perch. -- n.

An order of fishes having some of the rays of the dorsal, ventral, and anal fins unarticulated and spinelike, as the perch.

sion of Cephalopoda in which the arms are furnished with cup-shaped suckers, as the cuttlefishes, squids, and octopus; the Dibranchiata. See Cephalopoda.

Furnished with fleshy cups for adhering to bodies, as cuttlefish, etc.

A sucker of the sepia or cuttlefish and related animals.

A genus of ganoid fishes, including the sturgeons, having the body armed with bony scales, and the mouth on the under side of the head. See Sturgeon.

A group of acalephs, including most of the larger jellyfishes; the Discophora.

(Anat.) One of the bones at the base of a paired fin of a fish.

Next to the ambulacra; as, the adambulacral ossicles of the starfish.

d wine; olives afford oil; the earth affords fruit; the sea affords an abundant supply of fish.

An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus.

A name applied to several large fishes of the Mackerel family, esp. Orcynus alalonga. One species (Orcynus thynnus), common in the Mediterranean and Atlantic, is called in New England the horse mackerel; the tunny. [Written also albacore.]

The bleak, a small European fish having scales of a peculiarly silvery color which are used in making artificial pearls.

A genus of perching birds, including the European kingfisher (Alcedo ispida). See Halcyon.