fin rays


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fin rays

the skeletal structures that give rise to the shape of fins in fish. They may be cartilaginous, bony or fibrous.
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Pectoral fin plate and the fin rays developed at 6.22 +- 0.28 mm (19 DPH, Fig.
The number of second dorsal fin rays ranged from 24 to 31 with an overall mean of 27.79 and no significant differences between regions were observed (P = 0.816).
Comparison of white sucker age estimates from scales, pectoral fin rays, and otoliths.
The study, titled "Digits and fin rays share common developmental histories," appeared Wednesday in the journal (http://www.nature.com/nature/journal/vaop/ncurrent/full/nature19322.html) Nature and used "novel gene-editing techniques and sensitive fate mapping to label and track developing cells in fish" over three years of experiments.
On the eye-side they start between the bases of the 15 th and 16th rays and extend as far as the bases of the 42nd and 43rd dorsal fin rays, but are absent in the anterior and posterior skin portions of the trunk close to the fins.
In stage III (mid- and late-metamorphic), the fin rays, gill rakers, scales, and lateral line develop.
Caudal fin distal margin rounded, with 22-24 rays in males and 22-26 fin rays in females.
But shorter, bluer wavelengths can plunge deep, where they are absorbed by the scales and some of the fin rays on both male and female C.