Unpaired fins

Related to Unpaired fins: pectoral fin, pelvic fin, heterocercal fin
(Zool.) the dorsal, caudal, and anal fins.

See also: Fin

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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References in periodicals archive ?
Unpaired fins hyaline with light brown and spots bars on the basal portion of the dorsal, anal and caudal fins.
beniensis, from the rio Madeira drainage; Owiyeye is diagnosed by the absence of dermosphenotic, a derived pattern of frontal squamation, and a colour pattern of the mandibular region, and includes species from the Amazonas and Orinoco river basins; Melanorivulus is diagnosed by an apomorphic morphology of preopercle, and derived colour patterns of male postorbital region and female unpaired fins, and includes species from southern Amazonian tributaries, Parana-Paraguay river system, and Parnaiba and Sao Francisco river basins.
Unpaired fins grey with hyaline small spots on basal portion; anal fin with pale yellow subdistal stripe, and distal grey stripe.
grelli and distinguished from all other congeners in having grey to black margins in the unpaired fins in males and females.
Papiliolebias was diagnosed by Costa (1998b) by the following four synapomorphies: nine pelvic-fin rays; unpaired fins dark blue; presence of white stripe along the distal margin of anal-fin and a humeral metallic green spot.
Behavior in captivity: The male initiates the courtship expanding its unpaired fins next to the female, forming with their bodies, angles of 10[degrees] or 15[degrees].
Posterior two-thirds of body with three to five blue bars, over the light-brown background, including the unpaired fins. Light blue spots sparsely distributed across the caudal peduncle.
Depth 2.65 in SL; anal 45; lateral line 55; eye 0.66 in snout, 0.8-0.83 in interorbital; unpaired fins bright red C.