fin

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fin

(fĭn)
n.
A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water.

fin

a flattened limb found in aquatic animals, and used for locomotion.

fin

winglike structure attached to the body of fish and cetaceans; used for steering and propulsion during progress through the water.

fin rot
a disease of aquarium fish characterized by thickening followed by necrosis of the fin and tail tissues, commencing at the edges, caused by Haemophilus piscum and Aeromonas spp. May be bracketed with fin rot/tail rot/snout erosion. Often associated with suboptimal cultural conditions. Mixed populations of opportunistic bacteria are usually present.
References in periodicals archive ?
The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a critically endangered sub-species of the narrow-ridged finless porpoise (Neophocaena asiaeorientalis) that exclusively occurs at Yangtze River and adjacent Poyang Lake and Dongting Lake (Gao and Zhou, 1995; Jefferson and Wang, 2008).
Conservation efforts, which were almost nonexistant for the baiji, may still aid the Yangtze finless porpoise.
Through the pun on the "crow[bar]" (iron crow) and the "crow," Dromio of Ephesus elaborates on Dromio of Syracuse's figure of finless fish and featherless fowl.
BEIJING - A joint Sino-Japanese scientific research team is checking a portion of the Yangtze River for key information on the behavior of an endangered subspecies of finless porpoise, Chinese state media said Tuesday.
From this the metaphor extends and the rolling body, now linked to the sea, becomes a fish or fishlike creature described as finless, but with scales and curled webbed toes.
finless mermaids, cavorting the giggled trip and fall
His senses became supernatural: beyond the breaking combers, the dappled lagoon, he heard terns, and the thrum of insects in the acacias, and the heavy shifting of leaves in avocado trees, the sounding of bats, the dry rasping of bark at the collars of coconut palms, spiky burrs dropping from bushes into hot sand, the smooth seashore roar inside an empty trumpet shell, the rotting smell of conch eggs beached in their black pouches and far down the island, near the horizon--he could walk it down--he knew he would find the finless trunk of a dolphin, rolling in the swash, its flesh already being carted off, piece by piece, by stone crabs.
IN CHURNING WATER AT the base of Bonneville Dam what appears to be a nearly finless young salmon pops to the surface.
During the past three years, a small group of finless porpoises were used to test the suitability of the reserve.
of Boston showed off a new extruder with a finless "Tornado" air-cooling system.
I was told that the bank was the safest place for a finless mind" (Dickinson, Letter 282).
Far over the ice, between the hemlock woods and snow-clad hills, stands the pickerel fisher, his lines set in some retired cove, like a Finlander, with his arms thrust into the pouches of his dreadnought; with dull, snowy, fishy thoughts, himself a finless fish, separated a few inches from his race; dumb, erect, and made to be enveloped in clouds and snows, like the pines on shore.