Shorefishes of the Eastern Pacific online information system

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Species: Microlepidotus brevipinnis, Brassy grunt, Short-fin humpback grunt

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back - oblique brown stripes
LL 60-62

Microlepidotus brevipinnis (Steindachner, 1869)

Brassy grunt, Short-fin humpback grunt

Body an elongate oval, depth 2.6-2.7 in SL, compressed; chin with 2 pores at front and 2 behind in a deep central hole; preopercle finely serrated to toothed, without large spines;  lower gill rakers 16; anal rays III, 12-13, 2nd  spine not much larger and thicker than 3rd  spine; dorsal fin XIII, 16-17, with a shallow notch between spines and rays; pelvic fins much shorter than pectorals; body scales generally with clusters of small accessory scales at their bases; soft dorsal and anal fins with scales covering membranes between rays;  lateral-line scales 60-62.
Silvery grey with brown spot on each scale of back giving impression of dark oblique stripes; dorsal and anal fins dusky yellowish; pelvic and pectoral fins yellowish; caudal fin brown; not red inside mouth.
Size: reaches 38 cm.
Habitat: forms schools in sandy areas around reefs
Depth: usually in 5-94 m.
The mouth of the Gulf of California to Ecuador.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom + water column
  • Near Bottom
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
  • Sand & gravel
FishBase Habitat
  • Bentho-Pelagic
Feeding Group
  • Planktivore
  • No Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Data
  • Zooplankton
  • Mobile benthic gastropods/bivalves
Egg Type
  • Pelagic larva
  • No data
  • Pelagic
Global Endemism
  • All species
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • Continent only
  • All species
  • 3 provinces (Cortez + Mexican + Panamic) endemic
  • Continental TEP endemic
  • TEP endemic
  • Continent
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 38
Depth Range Min
  • 5
Depth Range Max
  • 94