Results for “ctenoid scale”
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Sicyopus cebuensis
Chen & Shao, 1998
Max length45mm SL1.8in SLTank60 × 30cm24 × 12inTemp22–28°C72–82°FpH6.5–7.5This species is not in the aquarium trade though is maintained by a few private collectors. It can be distinguished from all other members of the genus by the following combination of characters: first dorsal-fin withfirst dorsal-fin elongate in males; anterior portion of body with loosely-arranged ctenoid scales; head, entire nape to first dorsal-fin base, pectoral base, and belly naked; male colour pattern comprising creamy-yellow anterior portion of body with dark blotch at midbody and bright orange/red in postero...

Laetacara thayeri
Steindachner, 1875
Max length65mm SL2.6in SLTanknot recordedTemp20–28°C68–82°FpH4.5–7.5This species is relatively rare in the aquarium trade. It can be differentiated from all congeners by a combination of possessing ctenoid (vs. cycloid) scales on the sides of the head plus lacking a dark spot at the caudal-fin base.