Shorefishes of the Eastern Pacific online information system

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Species: Xenomedea rhodopyga, Red-rump blenny

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eye & nape cirri simple
D: notch after spines; front not high, with black spot
oblique brown & white bars behind eye
A: base with fleshy ridge

Xenomedea rhodopyga Rosenblatt & Taylor, 1971

Red-rump blenny

Elongate; pointed head with oblique mouth; short unbranched cirrus at nostril, over eye and on nape; teeth on front but not sides of roof of mouth; dorsal fin XX-XXIII, 8-11, notch between spines and rays; anal rays II, 18-22, first anal spine much shorter than 2nd  in male; male with fleshy folds around genital papilla & front of anal fin base; female with ridge from anus along each side of anal fin base to level of 2nd  soft ray; total (right and left) pectoral rays 24-28 (usually 26); lateral-line scales 39-45.

Color varies from plain pinkish to strongly marked with brown bars or squarish brown to red blotches, flecked with white; an oblique brown band with oblique white band immediately above rear corner of eye and another just below, with a dark bar below that; a small black spot at front of dorsal fin; a white bar on base of pectoral fin.

Maximum size, 6.5 cm.

Habitat: relatively common on rocky, weed-covered reefs from tide pools.

Depth: 1-33 m.

Western and central eastern Gulf of California.

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Species Data Create Report Export as Word File Export as Excel File
  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Reef only
  • Reef associated (reef + edges-water column & soft bottom)
  • Submerged vegetation
  • Rocks
  • Reef (rock/coral/oyster)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
  • Data
Egg Type
  • No data
  • Pelagic larva
  • Live birth
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • Cortez province endemic
  • Continental TEP endemic
  • Continent only
  • Continent
  • All species
  • TEP endemic
  • Resident
Climate Zone
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Length Max
  • 6.5
Depth Range Min
  • 1
Depth Range Max
  • 33