Abudefduf troschelii
Panamic Sergeant Major
Collection Details
Specimens
Photos
There are no photos available for this taxon yet.
Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Pomacentridae (Damselfishes)
Abudefduf
Abudefduf troschelii (Panamic Sergeant Major)
Description
This species account was compiled from
FishBase (Froese, R. and D. Pauly. Editors. 2025. FishBase. World Wide Web electronic publication. www.fishbase.org, version 04/2025.)
and processed using AI-assisted text extraction.
It may contain errors in spelling, punctuation, or formatting.
When citing, please reference the original source rather than this page.
Learn more about our species accounts.
Characters
Body shape: short and / or deep. With black spot on pectoral fin base. Striking features: none.
Distribution
Eastern Pacific: throughout the Gulf of California and from Bahía San Juanico, Baja California, Mexico to northern Peru, the Galapagos Islands and other offshore islands.
Habitat Associations
Marine. reef-associated. depth range 1-12 m. Found in: coral reefs.
Biology
Adults inhabit rocky and coral reefs (Ref. 9334). Usually in large aggregations. These diurnal feeders feed on plankton at the surface or mid-water; also graze on benthic invertebrates and algae on the reef. Breed during early summer in the Gulf and continues throughout the summer until fall. This fish is a warm-water, stenothermal species. Juveniles of second year class have been observed cleaning schools of striped mullet, halfbeaks and needlefish (Ref. 5592). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Max length: 20.0 cm TL; common length: 10.0 cm TL.
Reproductive mode: dioecism; fertilization: external; guarders (nesters); parental care: paternal. Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
IUCN Red List Status: Least Concern (LC), assessed 2007-05-27. Resilience: Medium (Preliminary K or Fecundity.).
References
Breder, C.M. and D.E. Rosen (1966) Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p.
Thomson, D.A. (1987) Reef fishes of the Sea of Cortez. The rocky-shore fishes of the Gulf of California. The University of Arizona Press, Tucson. 302 p.
Allen, G.R. (1991) Damselfishes of the world. Mergus Publishers, Melle, Germany. 271 p.
Grove, J.S. and R.J. Lavenberg (1997) The fishes of the Galápagos Islands. Stanford University Press, Stanford, 863 p.
Jiménez Prado, P. and P. Béarez (2004) Peces Marinos del Ecuador continental. Tomo 2: Guía de Especies / Marine fishes of continental Ecuador. Volume 2: Species Guide. SIMBIOE/NAZCA/IFEA.
Comments On Abudefduf troschelii