| Common names: chromis (English), damselfish (English), castañeta (Espanol), castañuela (Espanol), damisela (Espanol) |
Chromis alta Greenfield & Woods, 1980
Silverstripe chromis, Oval chromis, Oval damselfish
Body compressed, deep, oval, greatest body depth 1.8-2.2 in SL; 1 pair of nostrils; edge of bone under eye smooth; preopercle smooth or with occasional fine serrations; mouth small, protrusible, opens at front; teeth in 2 rows, outer conical, larger; gill rakers 27-33; a single continuous dorsal fin, XIII, 12-14; anal rays II,12-13; pectoral rays 19-21; 2-3 short projecting spines at upper and lower base of tail fin; caudal fin forked; scales large and rough; 16-19 lateral line scales; body scaled, most of head scaled, basal parts of the median fins scaled; lateral line incomplete, ends under end of dorsal fin base.
Light brown with darker scale margins; juveniles blue with neon-blue stripe above and below eye, and broad whitish band along base of dorsal fin that joins diffuse pale bar across tail base.
Maximum size to 15 cm.
Inhabits rocky reefs.
Depth: usually in about 1-200 m depth, but shallow in the Galapagos (5-45 m).
Southern California to the lower Gulf of California, all the offshore islands, and Lobos de Afuera islands off Peru.
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic
Regional Endemism: All species, TEP 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), South Temperate (Peruvian Province )
Catalog Number: USNM 219028
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): H. Fehlmann
Year Collected: 1966
Locality: Galapagos Islands: Isla Isabela (Albemarle Island) Rocky Area About 1 mi. N. of Caleta At Pta. Tortuga, Albemarle Island (Isabela), Galapagos Islands, Pacific
Depth (m): 15
Vessel: Anton Bruun
- Paratype: Greenfield, D. W. & Woods, L. P. 1980. Copeia. 1980 (4): 630.
Inshore/Offshore: Inshore, Inshore Only
Water Column Position: 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): 15 - 122
Temperature range (°C): 14.586 - 14.586
Nitrate (umol/L): 22.401 - 22.401
Salinity (PPS): 34.980 - 34.980
Oxygen (ml/l): 2.139 - 2.139
Phosphate (umol/l): 1.809 - 1.809
Silicate (umol/l): 18.397 - 18.397
Depth range (m): 15 - 122
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
From 30 to 150 meters.
Habitat: reef-associated. Lives in inshore and offshore coral and rocky reefs. Feeds on plankton (Ref. 9334).
Diet: Pelagic crustacea, zooplankton, pelagic fish eggs
Life History and Behavior
Molecular Biology and Genetics
Barcode data: Chromis alta
Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.
See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
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Download FASTA File
Statistics of barcoding coverage: Chromis alta
Public Records: 2
Specimens with Barcodes: 27
Species With Barcodes: 1
CITES: Not listed
IUCN Red List Assessment
Red List Category
Red List Criteria
This species was studied in different sites at Galapagos archipelago, with an overall mean abundance of 1.49 ind./500 m2 (Edgar et al. 2004). In Cabo Pulmo, Mexico, this fish was considered scarce with 0.1-1% of the overall abundance registered and a relative frequency below 10% (Villarreal-Cavazos et al. 2000).