Page 101


•  Diplospinus multistriatus Meristics: Myomeres:

58 – 61

Dorsal spines + rays:

XXX – XXXVI + 36 – 42

Anal spines + rays:

II + 28 – 33

Pelvic spines + rays:


Pectoral rays:

11 – 13

-- Morphology: In comparison to other species of that family the body is relatively deep. The ventral gut is distinctly flattened. At the lower jaw tip two forward protruding spines are present.The flexion takes place within a length of 8 – 10 mm SL.The dorsal spines are almost completely developed in larvae more than 8 mm SL. The very long spines of the dorsal fin and the spine of the pelvic fin are strongly serrated (Figure 69). The pelvic spine is also elongate, reaching beyond the vent while the rays are absent. The preopercular spine is only moderately serrated. No dorsal or anal finlets develop.

-- Pigmentation: The gular membrane is pigmented. Spots form along the base of the dorsal fin and on the membrane of the first dorsal fin. Further pigmentation is on fore- and midbrain, on the gut, on the tip of the lower jaw and posteriorly to the eyes.

-- Reference: COLLETE et al. (1984); FAHAY (1983); PARIN (1986a); RICHARDS (2006j);

-- Reference material: 3 specimens; 11/97: S10 (P73360); S16 (P73361-62);

-- Distribution: All specimens were only caught at neritic stations during the night in autumn, so northeast of Lanzarote at a depth of 20 – 64 m and west of Gran Canaria at a depth of 42 – 66 m.

Trichiuridae The body is elongate and laterally strongly compressed with an initially short gut, which elongates during flexion and postflexion stage. The maxilla is enclosed be the preorbital and the anterior are strongly developed. The fin formation starts with the development of the dorsal fin. Both, the dorsal as well as the anal spines are serrated, while the dorsal spines are not longer than the dorsal rays. And the two anal spines are located directly behind the vent. The pelvic fins are reduced to one spine and one ray, where the spine is serrated too. But the pelvic fins may be even absent. Additionally the caudal fin is reduced or absent too. Prominent for this family is the very high vertebrae count, which ranges from 100 to almost 200. For identification the meristic counts are crucial.

-- Reference: COLLETTE et al. (1984); RICHARDS (2006k);


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