In 2012 we captured two larvae with hypertrophied vomerine
teeth in Unnamed Lake 21 (hereafter Lake 21, 46.97465-9.5757; Swanson, 1988).
Jaws about equal, oblique, premaxilla with an abrupt bend between the anterior horizontal portion and lateral part; maxilla ends below about anterior edge of pupil or slightly anterior to this point; maxillary length 2.6 (2.7-3.4) in HL; lips thin; teeth conical with slightly curved tips, extending on to outer surface of lips; teeth of upper jaw in 6-7 irregular rows anteriorly, reduced to 1-2 rows posteriorly, where they are exposed when mouth is closed; teeth in lower jaw in about 12 irregular rows anteriorly, reduced to 1-2 rows posteriorly; vomerine
teeth in 2 well-separated patches, with about 10-12 teeth in each patch of holotype; palatine teeth absent.
In contrast to the spiny and spinulose tubercles, along with the spinules and tubercles of the lateral-line segments, all of which fit better within the non-toothlike category of Sire & Huysseune (2003), the branchial tooth plates, gill-raker tubercles and associated teeth of the studied cottids, along with their jaw and vomerine
teeth, conform better with the tooth-like development and structure of the first category of Sire & Huysseune (2003).
teeth (Costa 1998a) (CI: 0.40; RI: 0.80): (0) usually 1-4, sometimes 5-6; (1) 6-12; (2) teeth absent [not ordered].
Blue spots distinct over entire body; pectoral-fin rays 17 or 18; no vomerine
teeth; 34 or 35 gill rakers on first gill arch; 50-54 pores in the lateral line series, uniserially arranged; vomerine
teeth absent (Gulf of California) O.
The diagnosis of cannibal morphs - 1 collected in August and 3 of the largest paedotypic animals collected in September - was determined by qualitative head morphology and degree of vomerine
, maxillary, premaxillary and dentary tooth hypertrophy.
Cannibals have a broad head and enlarged vomerine
teeth (Collins et al.
-- SMU 72863 is a vomerine
toothplate, two millimeters long, with three rows of regularly arranged teeth (Fig.
It is distinguished from congeners, and especially from M misoolensis, by a combination of features that include a distinctive colour pattern with yellow dorsal, anal, and pelvic fins, usually 18-19 rakers on the first gill arch, 11-16 cheek scales, 12-13 circum-peduncular scales, first dorsal fin situated well behind anal fin origin, presence of both vomerine
and palatine teeth, conspicuously rounded anal fin with relatively elongate rays on the anterior half, and relatively slender body in both sexes (greatest depth usually less than 35% SL).
caudomarginatus by possessing more vomerine
teeth, longer dorsal fin base, and a unique male colour pattern.
Additional diagnostic features include 18-20 gill rakers on the first branchial arch, 15-16 circumpeduncular scales, and an absence of vomerine
teeth or a small, inconspicuous patch of rudimentary vomerine