Page 97


•  Thalassoma pavo Meristics: Vertebrae:


Dorsal spines + rays:

VIII + 12 – 13

Anal spines + rays:

III + 10 – 12

-- Morphology: The body is slender and laterally compressed with a deep caudal peduncle. There are no head spines and the mouth is small. The single dorsal fin is long based, while the anal fin is about half the length.

-- Reference: QUIGNARD and PRAS (1986b);

-- Reference material: 1 specimen; 11/97: S6 (P5793);

-- Distribution: Only a single specimen was caught at an epipelagic station west of the channel between Lanzarote and Fuerteventura at 28 – 43 m depth during late night, almost in morning in autumn.

TRACHINOIDEI > Chiasmodontidae The larvae are slender and elongate with a short preanal length having a maximum of 50 % of the SL, which stays more or less stable throughout the entire larval development. Spination is present at the preoperculum, except for the genus Kali. Near or during the flexion tiny spines develop all over the body, except for the genus Kali. The pigmentation is strong, but restricted to the dorsally surface of the gut and gas bladder and spreads out during development. The caudal fin is the first to develop followed by the formation of the pecotral fins. The dorsal fin counts ranges from 6 – 13 spines and 18 – 28 rays. The anal fin may possess one spine and the rays range from 17 – 28.The pectoral fins form 10 – 15 soft rays, while the pelvic fins have one spine with 5 soft rays. The number of vertebrae varies from 33 – 48.

-- Remark: Spots are developed on the ventral and dorsal margin of the body, but staggered to each other. One spot is present at the caudal fin base and further dots at the forebrain.The body is full with tiny spines and a preopercular spination is present (the specimen is at least no Kali). There is one tooth on the tip of the lower jaw (Figure 63).

-- Reference: HARDY (2006b); WATSON, MATARESE and STEVENS (1984);

-- Reference material: 1 specimen; 11/97: S4 (P65181);

-- Distribution: The only chiasmodontid larva was found at a neritic station southeast of Fuerteventura in autumn at a depth of 22 – 35 m during daytime.


Inf. Téc. Inst. Canario Cienc. Mar. n°13

Spatial and seasonal patterns in species composition of fish larvae in the Canary Islands  
Spatial and seasonal patterns in species composition of fish larvae in the Canary Islands  

Technical report consisting on a comprehensive annotated larvae taxa list with the most important taxonomic characters of this region