Species: Idiastion hageyi, Galapagos humpback scorpionfish

head very spiny, spines branched, nape spiny
D spines I-III white
fin borders white

Idiastion hageyi McCosker, 2008
Galapagos humpback scorpionfish
Body behind head deep, humpbacked, compressed; head very bony, with strongly developed spines, often with multiple points, numerous large spines on top of head and nape; without pit behind eyes; head profile moderately steep; eye large, with a row of papillae nearly surrounding it; front nostril with a slender tentacle, slightly shorter than nostril tube; longitudinal ridge under rear of eye with 5 spines; uppermost of 4 preopercular spine separated from others and longest; teeth small, simple, on sides and front of roof of mouth; small slit behind last gill arch; mouth large, slightly oblique; lower jaw slightly protruding with a front knob; in throat; dorsal fin XII (3rd spine longest, 9 branched rays; anal fin III, 6 branched rays; pectoral with longest rays in center, 18 rays, ray 1 & bottom 7-9 rays unbranched, lower, unbranched rays fleshy, with free tips; scales mostly rough; between eyes without scales; lateral line complete, with tubes on scales, 15-16 pored scales; 52 scale rows in longitudinal series; small swim bladder.
Head, body and fins uniformly reddish orange; head, body and pectoral base with distinct, irregular white blotches smaller than eye; dorsal fin with skin of spines white, membranes between spines I-III white; rear margin of soft dorsal, tail, anal and pectoral fins white; faint dark smudges on operculum, around eye, on nape, between eyes and along base of dorsal fin.
Reaches at least 11.8 cm.
Depth range: 522 m.
Lives on rock and sand bottom.
Known from a single specimen collected at the Galapagos.

High Resolution Map Download
- Salinity
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- Marine
- Marine Only
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom only
- Bottom
- Habitat
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- Rocks
- Reef associated (reef + edges-water column & soft bottom)
- Reef and soft bottom
- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- FishBase Habitat
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- Bathydemersal
- Feeding Group
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- Carnivore
- No Data
- Diet
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- Mobile benthic crustacea (shrimps/crabs)
- Octopus/squid/cuttlefish
- No Data
- Bony fishes
- Egg Type
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- Pelagic larva
- Pelagic
- No data
- Global Endemism
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- Tropical Eastern Pacific (TEP) endemic
- Regional Endemism
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- Island (s)
- Island (s) only
- TEP endemic
- Galapagos Islands endemic
- TEP oceanic island (s) endemic
- Residency
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- Resident
- Climate Zone
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- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- IUCN Red List
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- Not evaluated / Listed
- CITES
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- Not listed
- Length Max
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- 11.8
- Depth Range Min
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- 522
- Depth Range Max
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- 522