Froese, R. and D. Pauly. Editors. (). FishBase. Abudefduf troschelii (Gill, ). Accessed through: World Register of Marine Species at. Common names: sergeant-major (English), pintaño (Espanol), petaca (Espanol) Abudefduf troschelii (Gill, ) Panamic sergeant-major. Body relatively deep. Abudefduf troschelii. Panamanian sergeant major. Mulegino; Sargento mayor; Pintano. Family: POMACENTRIDAE (Damselfishes).
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Globally, there are twenty-five species in the genus Abudefduffour of which are found in Mexican waters, two in the Atlantic and two in the Pacific. They are whitish to pale silvery green in color with a bright yellow back and dark bars across the side of their body and caudal peduncle.
Their head has a steep profile and a small protrusible mouth with a single row of teeth. Their caudal fin is forked with broad lobes.
They have two anal spines and 10 to 13 rays and a single continuous dorsal fin with 13 spines and 12 or 13 rays. They have 23 to 33 gill rakers.
Their lateral line is anudefduf and ends under the edge of their dorsal fin base. Their body is covered with rough scales.
IUCN Red List of Threatened Species
The Panamic Sergeant Abudefdduf are a non-migratory species found in shallow water over and within rocky reef structures buffeted by wave action at depths up to 50 feet. They reach a maximum length of They are diurnal feeders consuming primarily algae, plankton, and benthic invertebrates.
Reproduction is oviparous with pairing of individuals; eggs are distributed demersal and adhere to the substrate due to their stickiness. While breeding, males turn a very dark metallic blue to attract females to their nesting site, then guard and aerate the eggs. In Mexican waters the Panamic Sergeant Majors are found in all waters of the Pacific with the exception that they are absent from Magdalena Bay northward along the central and northwest coasts of Baja.
Panamic Sergeant Major | Mexico – Fish, Marine Life, Birds and Terrestrial Life
The Panamic Sergeant Major, due to its barring pattern and yellow coloration is not easily confused with any other species, however, it is virtually identical to the Sergeant Major, Abudefduf saxatilis found only in the Atlantic Ocean and is similar in color to the Graybar Grunt, Haemulon sexfasciatum rectangular oblong body; six or seven bars.
The Panamic Sergeant Majors are rather small but are considered an excellent food fish.
They are classic nibblers, thus difficult to hook. Fish collected with a bait net off the surface in coastal waters off Loreto, Baja California Sur, June Panamic Sergeant Major, Abudefduf troschelii.
Note the atypical bronze coloration. Underwater photo taken in Zihuatanejo Bay, Guerrero, March Photo courtesy of Ron Woheau, Zihuatanejo.