Species: Colpichthys hubbsi, Delta silverside
eye < 20% head
40-47 lateral scales
edge of top lip folded down
Colpichthys hubbsi Crabtree, 1989
Delta silverside
Body deep and strongly compressed; head depressed, and broadly flattened above; top profile ~ straight; eye small (< 20%head length); mouth partly below snout, top jaw extendible; edge of top lip folded down; jaw teeth with double, asymmetrical points; hair-like teeth inside throat; lower gill rakers 15-19, short, compressed, with inner edge serrated; 1st dorsal with ~ VI spines, origin over or behind origin of anal fin; pectoral fins long (1.5x head length; 3 rows of scales below eye; 4 rows of scales on cheeks; 40-47 lateral scales; 3-5 scales between dorsal fins.
Color: Translucent green, flank with a silver stripe.
Reaches 17.7 cm.
Primarily in freshwater and estuaries.
Depth range 0-4 m.
Endemic to the northern Gulf of California.
High Resolution Map Download
- Salinity
-
- Brackish
- Marine
- Freshwater
- Inshore/Offshore
-
- Inshore
- Inshore Only
- Water Column Position
-
- Near Surface
- Water column only
- Surface
- Habitat
-
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Water column
- Estuary
- Freshwater
- FishBase Habitat
-
- Bentho-Pelagic
- Feeding Group
-
- Carnivore
- Data
- Diet
-
- Mobile benthic crustacea (shrimps/crabs)
- Mobile benthic gastropods/bivalves
- Data
- Egg Type
-
- Benthic
- No data
- Global Endemism
-
- Tropical Eastern Pacific (TEP) endemic
- East Pacific endemic
- All species
- Regional Endemism
-
- All species
- Continent only
- Northern Gulf of California endemic
- Continental TEP endemic
- Cortez province endemic
- TEP endemic
- Continent
- Temperate Eastern Pacific, primarily
- Residency
-
- Resident
- Climate Zone
-
- North Temperate (Californian Province &/or Northern Gulf of California)
- IUCN Red List
-
- Listed
- Endangered
- CITES
-
- Not listed
- Length Max
-
- 17.7
- Depth Range Min
-
- 0
- Depth Range Max
-
- 4
