| Common names: angelfish (English), muñeca (Espanol), ángel (Espanol) |
Holacanthus clarionensis Gilbert, 1891
Deep compressed body; a small mouth with brush-like teeth; preopercle with large spine at its angle, with vertical margin serrated; bone between preopercle and operculum with 1-4 large spines; bone under eye without large, rear-pointing spines; a single, un- notched dorsal fin, XIV, 17-19; anal rays III, 18-19; dorsal and anal fins end in filaments; tail straight; lateral line weakly developed, ends under end of soft dorsal fin; large (< 50 in lateral series) regularly arranged, very rough scales with distinct ridges on the exposed part, scales extend out onto the median fins.
Body brownish orange, head dark brown; a broad bright orange area just behind head; tail fin orange; juveniles: brownish orange with narrow blue bars on side and pair of similar bars on head, bars gradually become narrower and eventually disappear with increased growth.
Size: reaches 20 cm.
Occurs solitarily or in aggregations on rocky reefs.
Depth: 0-30 m.
Endemic to the Revillagigedo Islands, with stragglers at Guadalupe, Alijos Rocks, southern Baja and the SW Gulf of California and at Banderas Bay in the SE Gulf of California, and Clipperton Island.
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic
Regional Endemism: All species, TEP endemic, TEP oceanic island (s) endemic, Revillagigedo Islands endemic, Continent + Island (s), Continent, Island (s)
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
Inshore/Offshore: Inshore, Inshore Only
Water Column Position: Surface, Near Surface, Mid Water, Near Bottom, Bottom, Bottom + water column
Habitat: Reef (rock &/or coral), Reef only, Rocks, Corals, Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat: Reef Associated
Habitat and Ecology
Water temperature and chemistry ranges based on 1 sample.
Depth range (m): 1 - 1
Temperature range (°C): 24.554 - 24.554
Nitrate (umol/L): 0.162 - 0.162
Salinity (PPS): 34.642 - 34.642
Oxygen (ml/l): 4.733 - 4.733
Phosphate (umol/l): 0.429 - 0.429
Silicate (umol/l): 3.286 - 3.286
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
Diet: benthic microalgae, sessile crustacea, sessile worms, sessile molluscs, zooplankton, pelagic fish eggs
Life History and Behavior
CITES: Not listed
IUCN Red List Assessment
Red List Category
Red List Criteria
This species has a restricted distribution with the majority of the population confined to a reef habitat in a single location (two locations if Clarion is considered separate from the other three islands), and its area of occupancy is estimated to be less than <50 km2. It has previously been collected for the aquarium trade.
In the Eastern Tropical Pacific, severe localized fish species declines have occurred after strong ENSO events that result in shallow waters that are too warm and nutrient poor for extended periods of time (Grove 1985, Edgar et al. 2009). The frequency and duration of ENSO events in this region of the Eastern Tropical Pacific (e.g. the up-welling zone off the coast of Peru, Ecuador, Colombia, Panama and the offshore islands) appears to be increasing (Glynn and Ault 2000, Soto 2001, Chen et al. 2004). Given this species restricted distribution and shallow water habitat, oceanographic environmental changes, such as those associated with future ENSO events, may have detrimental effects on the survival of this species.
This species is almost entirely limited to the Revillagigedo Islands Marine Protected Area with collection of animals prohibited in Mexican waters (Endoh 2007). This species should be carefully monitored, given its restricted range and shallow reef-associated habitat.
Relevance to Humans and Ecosystems
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