Histrio histrio

Histrio histrio
Sargassumfish – Histrio histrio
FamilyScientific NameAuthorYearCommon Name
AntennariidaeHistrio histrio(Linnaeus)1758Sargassumfish

Histrio histrio

Unique Characters: Skin of body smooth, appearing naked (dermal spinules, if present, difficult to detect without microscopic aid). Pectoral-fin lobe free from body. Pelvic fins long, greater than 25% standard length. Pelagic in floating Sargassum weed.

Similar Species:

Oscellated Frogfish Fowlerichthys ocellatus

Singlespot Frogfish Fowlerichthys radiosus

Striated Frogfish Atennarius striatus

Oscellated Frogfish Fowlerichthys ocellatus. Skin of body rough, everywhere covered with extremely close-set spinules. Pectoral-fin lobe broadly connected to body. Pelvic fins short, considerably less than 25% standard length. Benthic in coral or rocky reefs, or on muddy or sandy bottoms. Brownish, yellowish, grayish, to reddish with variable darker and paler blotching. Small spots and smudges pepper head and body. Always with large, dark ocelli at dorsal-fin base, on caudal fin, and on midbody. Lure short, densely clustered at tip.

Singlespot Frogfish Fowlerichthys radiosus. Skin of body rough, everywhere covered with extremely close-set spinules. Pectoral-fin lobe broadly connected to body. Pelvic fins short, considerably less than 25% standard length. Benthic in coral or rocky reefs, or on muddy or sandy bottoms. Color variable. Beige, pale brown to grayish brown. Single, dark ocellus under base of second dorsal fin. Body may have reticulating pattern. Fins may be barred. Lure about as long as second dorsal-fin spines; tip small, simple.

Striated Frogfish Atennarius striatus. Skin of body rough, everywhere covered with extremely close-set spinules. Pectoral-fin lobe broadly connected to body. Pelvic fins short, considerably less than 25% standard length. Benthic in coral or rocky reefs, or on muddy or sandy bottoms. Shades of brown, yellow, beige. May be uniformly colored to  densely banded and spotted. Some are black with pale mottling. Body and fins may have few to numerous fleshy filaments. Lure short; tip fleshy, branched, worm-like.

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