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Disc wider than long, margins of pectoral fins broadly rounded; anterior lobes of pelvic fins slender, pointed; disc longer than tail; snout soft, flexible, especially near tip, internal supporting rostral cartilage slender and weak; teeth small, numerous, 28 rows in upper jaw; interorbital space wide, flat to slightly concave; thorns absent from disc; tail thorns 29, interdorsal thorns 0; dorsal and ventral surface of head and body uniformly covered with small denticles; dorsal fins small, well separated, about equal in height and length.
The pelvic fin preserves one spine and five rays, with the largest closest to the midline and approximately 2 mm in diameter.
Spinous dorsal-fin membrane completely dark and without spots, dorsal and caudal fin uniform dark blue to black, thin unpigmented strip on distal margin of caudal fin; anal fin slightly lighter, gray-blue to dark gray; pelvic fins light gray with blue tips, spine white to light gray; pectoral fins mostly dark blue-black, distal half of unbranched pectoral-fin rays light gray to white.
In males from all investigated species they considerably exceed half of the distance between bases of pectoral and pelvic fins (59-91 %).
Modified pelvic fins that are finger-like in appearance are used to sift through the substrate to locate small fish, squid, crustaceans and bivalves to feed on.
19-26 pored lateral-line scales; anal-fin with 24-26 branched rays; premaxilla with four teeth in outer row; pelvic fins with seven branched rays H.
Cut 1/4-inch strips from the belly portion, from the head end toward the pelvic fins (you can usually get 4 to 6 pieces per fish).
Eyes and mouth were completely covered with fungal hyphae; pectoral and pelvic fins damaged were damaged too (Fig.
37.14%.###Site of infection###was operculum,###skin, eyes, pectoral fins and pelvic fins. Skin was infected in six fishes followed by operculum infection in three fish each and eye infection in two fish each.
Specifically, fish classes that use varying degrees of body undulation and/or caudal fin oscillations for thrust generation are examples of the BCF mode, while fish relying on paired fins (pectoral fins and pelvic fins) and/or median fins (dorsal fin and anal fin) for thrust generation are categorized under the MPF mode.