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Species: Serranus socorroensis, Socorro serrano

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red + 2 rows ~ 6 pearl blotches - back & belly

Serranus socorroensis Allen & Robertson, 1992

Socorro serrano

Body elongate, moderately compressed, body depth 3.6-3.8 in SL; preopercle regularly serrated, no spur with enlarged spines; 18-19 lower gill rakers; dorsal rays X, 12-13; anal rays III, 7-8; pectoral rays 16; tail with straight edge; scales rough, relatively large, lateral-line scales 49-51; a small isolated patch of scales between eyes.

Upper head and body red, bright white immediately below; iris red;  4-5 pearl-white patches on back under dorsal fin and 6-7 reddish bar-like extensions on lower sides; dorsal fin with pink base, 4 red-brown spots along lower 1/2 of fin and adjacent part of back, outer membranes between spines white; 2 small red-brown spots on upper surface of caudal peduncle; tail, anal, pectoral and pelvic fins translucent.

Maximum size 8 cm.

Inhabits sand-rubble areas.

Depth: 5-20 m.

Known thus far only from Socorro Island in the Revillagigedos Group.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Reef only
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Rocks
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Octopus/squid/cuttlefish
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
  • Bony fishes
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • All species
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • All species
  • TEP oceanic island (s) endemic
  • Island (s)
  • TEP endemic
  • Island (s) only
  • Revillagigedo Islands endemic
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Vulnerable
  • Listed
  • Not listed
Length Max
  • 8
Depth Range Min
  • 5
Depth Range Max
  • 20