Dodekablennos fraseri Springer & Spreitzer 1978

With 12 pectoral-fin rays; with no nape and orbital cirri; typically with fewer than 65 teeth in each jaw; with vomerine teeth; 12 dorsal-fin spines and with only 2-6 branched caudal-fin rays; terminal anal-fin ray unbound by membrane to the caudal peduncle. Males possessing a fleshy, blade-like crest on head. Color pattern based on preserved specimens: dusky head, ventrally paler with slightly dusky chevron in smaller specimens or a cross mark on the largest specimen; dusky bar continuing ventrally beginning from midventral margin of orbit across lip, posteriorly alternated by paler area from diffuse dusky bar continuing ventrally from just posterior to eye across corner of mouth to ventral surface of head, contributing to formation of dusky chevron; pale upper lip and male crest with dusky spots; lateral side of body with 7-8 dark dusky bands interspersed with pale areas; anteriormost band dorsally diffused; all bands continuing onto dorsal fin; posterior bands typically dorsally forked in males and both dorsally and ventrally in females; posteriormost band expanded in largest specimen, continuing ventroposteriorly well onto caudal fin and joining dusky stripe along ventral margin of fin; dorsal-fin spines and rays variably dusky; males with distal intensely black spots on each of the first three interradial membranes; female lacking black spots; anal fin dusky and submarginally darker; spine and ray tips without pigmentation (Ref. 69212).

Oviparous, distinct pairing (Ref. 205).

Dorsal spines (total): 12; Dorsal soft rays (total): 19 - 20; Anal spines: 2; Analsoft rays: 21

Found in tide pools (Ref. 33390). Oviparous. Eggs are demersal and adhesive (Ref. 205), and are attached to the substrate via a filamentous, adhesive pad or pedestal (Ref. 94114). Larvae are planktonic, often found in shallow, coastal waters (Ref. 94114).

Dodekablennos fraseri

DESCRIPTION (characters in generic diagnosis not repeated).—Color pattern of preserved specimens (based on three males, 29.8–38.5 mm SL, female, 26.5 mm SL). Head dusky, paler ventrally, with faintly dusky chevron (smaller specimens) or X-shaped marking (largest specimen); dusky bar extending ventrally from midventral margin of orbit across lip, separated posteriorly by paler area from diffuse dusky bar extending ventrally from just posterior to eye across corner of mouth to ventral surface of head (contributing to formation of dusky chevron); upper lip pale with dusky spots; crest of male with dusky spots. Dark dusky bar on prepectoral area. Side of body with seven or eight dark dusky bands separated by pale interspaces; anteriormost band diffuse dorsally on body; all bands extending onto dorsal fin; posterior bands tending to fork dorsally in males, both dorsally and ventrally in females; in largest specimen posteriormost band is expanded and extends ventroposteriorly well out onto caudal fin joining dusky stripe along ventral margin of fin. Dorsal-fin spines and rays variably dusky; males with intense black spots distally on each of first three interradial membranes; female without black spots. Anal fin dusky, becoming darker submarginally; tips of spines and rays unpigmented.

ETYMOLOGY.—Named for Thomas H. Fraser, who collected all the specimens, recognized their distinctiveness, but allowed us to describe them.

DISTRIBUTION.—Known only from Mauritius.

HOLOTYPE.—RUSI 858 (out of former 2272 and 74–311), male, 37.1 mm SL; E side of Jacotet Bay, 1.7 mi (ca. 2.8 km) W of Riambel (area called “Point of Rocks”), Mauritius; tide pool connected to ocean at all but lowest tides of year; no coral reef protecting shore from open ocean waves; volcanic rock and coarse volcanic sand; clear, no turbidity; current slight; salinity, oceanic; rich growth of mostly attached brown algae, mainly a sargassum community; original preservative, 10% formalin; depth of capture, 0–2 ft (0–0.6 m); 26 Mar 1971; T. H. Fraser; field number, THF-SA-43.

PARATYPES.—RUSI 860 (out of former 2272 and 74–311), male, 38.5 mm SL (now cleared and stained); RUSI 859 (formerly RUSI 2273 and 74–311), female, 26.5 mm SL; USNM 216423 (out of former RUSI 2272 and 74–311), male, 29.8 mm SL; all collected with the holotype.

Mimoblennius Smith-Vaniz and Springer

We describe two new species of Mimoblennius below, bringing the total to four in the genus. All four species are allopatric and quite similar, and we are not confident that nomenclatural distinctions are warranted. The two previously described species have relatively broad distributions (Figure 6) and within each species there are marked population differences (Tables 2 and 3). The two new species are each known from a single locality. The fact that the various populations within each of the widespread species are morphologically linked to the exclusion of any other species, inclined us toward our taxonomic actions. Rather than present a key to the species, we refer the reader to Tables 2–4 and Figure 7 for purposes of identification. The same tables and figure serve as the main bases for comparisons of the new species.

The new material of Mimoblennius, including specimens of the previously described species, expands the ranges for certain characters of Mimoblennius as given by Smith-Vaniz and Springer (1971). The pertinent characters are as follows:

Dorsal fin XII–XIV (rarely XII or XIV), 15–19 (rarely 15); vertebrae 10 + 25–29 = 35–39; total premaxillary teeth 30–38, total dentary incisoriform teeth 24–32; supraorbital cirri simple to multifid.

MATERIAL EXAMINED (of the described species, not available to Smith-Vaniz and Springer, 1971).—Mimoblennius atrocinctus (Figure 10). CEYLON: Trincomalee, USNM 214225 (6 specimens, 19.3–29.6 mm SL.), 216528 (10, 22.5–35.2), 216530 (15.9), 216533 (28.1), 216677 (2, 25.4–27.0), 216678 (30.9), 216702 (18.3), 216707 (24.9), and 216708 (25.1); Batticaloa, USNM 216529 (9, 18.1–38.7); Hikkaduwa, USNM 216532 (23.8), 216676 (12, 15.6–30.7). TAIWAN: USNM 216531 (39.1). WESTERN AUSTRALIA: Dampier Archipelago, Kendrew Island, WAM P24612 (2, 36.6–46.7), P24644 (35.0), and P25111-035 (5, 17.8–37.4); Lady Nora Island, WAM P25117-028 (25.3).

Mimoblennius cirrosus (Figure 11). ISRAEL: Elat, Gulf of Aqaba, BPBM 17877 (29.1) and 18320 (2, 31.1–31.6). SUDAN: Port Sudan, Red Sea, BPBM 19713 (28.2).

Masuda, et al. (1975) reported collecting Mimoblennius atrocinctus at Chichi-Jima, Bonin Islands; the Ryukyu Islands; and Wakayama Prefecture, Japan. Based on their illustration and description of the species, we accept these records and have included them as open triangles on the map in Figure 6, which illustrates the known distribution of Mimoblennius.

Mimoblennius appears to be a continentally restricted genus that does not occur on the Pacific tectonic plate. The western margin of this plate generally conforms to the Andesite Line of Born (1932), which forms the eastern distribution limits of many fish taxa (Springer, 1971; Springer ms).

Dodekablennos fraseri és una espècie de peix de la família dels blènnids i de l'ordre dels perciformes.

Dodekablennos fraseri is a species of combtooth blenny found in the western Indian Ocean, around Réunion and Mauritius. This species is a resident of tide pools where it can be found at depths of from 0 to 2 metres (0.0 to 6.6 ft). This species is the only known member of its genus. Its specific name honours Thomas H. Fraser of the Mote Marine Laboratory who collected the type.

Dodekablennos fraseri es una especie de pez de la familia Blenniidae en el orden de los Perciformes.

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Dodekablennos fraseri Dodekablennos generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Blenniidae familian. Bere generoan kide bakarra da, hau da, monotipikoa.