Grammatonotus xanthostigma
Grammatonotus xanthostigma Anderson & Johnson, 2017
Yellowspot groppo
photo by Greene, B.D.


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Family:  Callanthiidae (Splendid perches)
Max. size:  6.1 cm SL (male/unsexed)
Environment:  pelagic-neritic; marine; depth range - 142 m
Distribution:  Western Pacific: Micronesia, Caroline Is. Senyavin Is., off Pohnpei I
Diagnosis:  This species is distinguished from its congeners except G. brianne, by the following set of characters: caudal fin is rhomboid shaped with mid-caudal rays produced; lateral-line disjunct; anal-fin spines are short; differs from G. brianne by the absence of scales on dentary (vs. present), measurements of several body parts, caudal fin rhomboid shaped in both species, but posterior halves of dorsalmost and ventralmost borders of fin slightly concave in G. xanthostigma (vs. gently rounded to convex) and a bright yellow spot at upper base of pectoral fin (vs. absent) (Ref. 116412).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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