Species: Rhonciscus crocro, Burro grunt
A 2nd spine long, thick
Rhonciscus crocro (Cuvier in Cuvier & Valenciennes, 1830)
Burro grunt
Body elongate, robust, (depth 29-36% of SL), strongly compressed; rear margin of bone under eye concealed by scales; mouth small to moderate size, inside not red, lips thin; chin with 2 pores at front and 2 inside hole behind, plus a longitudinal groove; preopercle coarsely serrated, ventral serrations not forward pointing; 7-9 short, blunt lower gill rakers; dorsal fin XIII, 11-13; anal rays III, 6-7, second anal spine long and thick; scales over entire body and head except front of snout, lips and chin; scales in longitudinal series just above lateral-line 53-55; 5-6 scale rows above and 16 rows below lateral line; soft dorsal fin with a low sheath of scales on its base but no scales on membranes between rays.
Adults: dark olivaceous above, silvery below; fins dusky; soft dorsal with a black margin; sides with dusky spots; juveniles uniform dusky.
Size: grows to 33 cm.
Inhabits soft bottoms and vegetation in turbid shallow water; often in rivers.
Depth: 0-10 m.
Florida to Brazil.
High Resolution Map Download
- Salinity
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- Marine
- Brackish
- Freshwater
- Inshore/Offshore
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- Inshore Only
- Inshore
- Water Column Position
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- Bottom
- Habitat
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- Sand & gravel
- Estuary
- Freshwater
- Mud
- Soft bottom only
- Submerged vegetation
- Mangrove
- FishBase Habitat
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- Demersal
- Feeding Group
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- Carnivore
- Data
- Diet
-
- Bony fishes
- Data
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- Data
- Pelagic larva
- Pelagic
- Global Endemism
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- All species.
- Greater Caribbean non-endemic
- West Atlantic Endemic
- Regional Endemism
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- Continent + Island (s)
- Island (s)
- All species..
- Also in Brazil
- Extends South of GC
- GC non-endemic
- Continent
- Residency
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- Resident
- Climate Zone
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- Equatorial (0-10N, Costa Rica / Venezuela)
- Tropical (10-23N, Nicaragua / Cuba)
- Subtropical (23-35N, Florida / Carolinas / Bermuda)
- IUCN Red List
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- Data deficient
- Listed
- CITES
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- Not listed
- Length Max
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- 33
- Depth Range Min
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- 0
- Depth Range Max
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- 10
