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Systematics of adult lampreys based on the “paired species” concept divides anadromous and residential specimens mostly on the size and size-depended criteria. Larvae of the paired species are poorly distinguished, so scientists keep looking for new diagnostic features. In the present paper structure and coloration of the tongue precursor in Arctic lamprey, Lethenteron camtschaticum, from the watersheds...
This paper gives the description of a striped panray Zanobatus schoenleinii (Müller and Henle, 1841) presenting the first case of albinism recorded in this species. The specimen was an adult male captured at low depth off the coast of Senegal (eastern tropical Atlantic). Comments on albinism in fishes are provided in this paper, especially all cases reported in batoid species.
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