Species: Atherinella crystallina, Blackfin silverside, Presidio silverside
D1 origin behind A origin
35-49 lateral scales
Atherinella crystallina (Jordan and Culver, 1895)
Blackfin silverside, Presidio silverside
Head length 23.4% of SL; top of head profile ~ straight; sensory system on snout with L shaped furrows at front; top jaw extendible; first dorsal short, not reaching base of second dorsal, front spines longest, II-VI, its origin behind origin of anal; second dorsal margin straight to slightly concave, front rays not very long, its base ends before base of anal; anal I, 16-27 (usually I, 21) rays, no scales, rear margin straight, with anterior rays longest; pectoral fin straight to curved, not reaching anus; 35-49 (39) lateral scales, 6-10 transverse rows of scales; large scale at side of pelvic fin base.
Fleshy base of pectoral darkly pigmented; male with dark-tipped pelvics (no pigment in female); first dorsal fin, front of second dorsal and front of anal dusky, darker in males than females; dark stripe along top of back; heart-shaped dark pigment patch over rear of brain; stripe along side sometimes silvery, not constricted on tail base, width < ½ eye diameter; swim bladder has window-like appearance through belly muscles.
Size: 10 cm.
Habitat: Usually in freshwater but also in estuaries.
Depth: 0-10 m.
Restricted to the SE Gulf of California.
High Resolution Map Download
- Salinity
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- Freshwater
- Non Marine
- Brackish
- Inshore/Offshore
-
- Inshore Only
- Inshore
- Water Column Position
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- Water column only
- Surface
- Near Surface
- Habitat
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- Freshwater
- Water column
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Estuary
- FishBase Habitat
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- Pelagic
- Feeding Group
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- Planktivore
- No Data
- Diet
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- Zooplankton
- Pelagic fish larvae
- No Data
- Pelagic fish eggs
- Egg Type
-
- Pelagic larva
- No data
- Benthic
- Global Endemism
-
- East Pacific endemic
- Tropical Eastern Pacific (TEP) endemic
- All species
- Regional Endemism
-
- All species
- Continental TEP endemic
- Continent
- TEP endemic
- Cortez + Mexican provinces endemic
- Continent only
- Residency
-
- Resident
- Climate Zone
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- Northern Subtropical (Cortez Province + Sinaloan Gap)
- IUCN Red List
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- Near threatened
- Listed
- CITES
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- Not listed
- Depth Range Min
-
- 0
- Depth Range Max
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- 10
- Length Max
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- 10
