homocercal


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Related to homocercal: heterocercal
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homocercal
swordfish tail

ho·mo·cer·cal

 (hō′mə-sûr′kəl, hŏm′ə-)
adj.
Relating to, designating, or characterized by a tail fin having two symmetrical lobes extending from the end of the vertebral column, as in most bony fishes.

[homo- + Greek kerkos, tail + -al.]

homocercal

(ˌhəʊməʊˈsɜːkəl; ˌhɒm-)
adj
(Zoology) ichthyol of or possessing a symmetrical tail that extends beyond the end of the vertebral column, as in most bony fishes. Compare heterocercal
[C19: from homo- + Greek kerkos tail]

ho•mo•cer•cal

(ˌhoʊ məˈsɜr kəl, ˌhɒm ə-)

adj.
having an equally divided tail, characteristic of adult modern bony fishes.
[1830–40; homo- + Greek kérk(os) tail + -al1]
ho′mo•cer`cy (-ˌsɜr si) n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.homocercal - possessing a symmetrical tail that extends beyond the end of the vertebral column (as in most bony fishes)
ichthyology - the branch of zoology that studies fishes
heterocercal - possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe
References in periodicals archive ?
This is obviously a translation error, as the creature is certainly shark-like and lacks the identifying rostrum and homocercal tail of the swordfish, and swordfish also lack the large triangular teeth depicted in the illustration (Castro, 2002).
In postflexion larvae, the caudal fin had a rounded, homocercal outline with about 8 rays in each of the upper and lower lobes.
5) From 11 to 15 DAH: Larvae swim well and have maneuverability, dorsal end of notochord is a little bent upward, there are bony rays in homocercal caudal fin, a mass of melanophores increases on caudal fin, dorsal fin is developed from embryonic fin wrinkle.