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| Common names: blenny (English), cachudito (Espanol), trambollito (Espanol) |
Hypsoblennius maculipinna (Regan, 1903)
Moderately elongate; short robust head, somewhat pointed, with convex upper profile; rear nostril with a short, pointed cirrus; a short (less than eye diameter) cirrus with several short branches over eye; no cirri on nape; teeth with blunt flattened tips, in single rows, not movable, no rear canines on either jaw; gill openings restricted to sides of body by fusion of gill cover membranes to throat; dorsal fin XII, 14 a slight notch between the spiny and soft parts; anal rays II, 16; last rays of dorsal and anal fins joined by membranes to base of tail fin.
Grey brown; head with an irregular oblique bar behind eye, connected to a blotch on cheek; upper body dark with a network of pale round blotches; midflank with a row of irregular spots or blotches; dorsal fin with a dark stripe covering its outer half along the first 3-4 spines.
Size reaches at least 6.2 cm.
Depth: 0-2 m.
Habitat: mud and sand bottoms in brackish and freshwater of coastal streams and estuaries
Costa Rica to Ecuador.