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Open Access PDF - Sven Kullander

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dark spot included in band at root of caudal<br />

peduncle. Fins hyaline. At about 50-60 mm SL<br />

dark stripe across soft dorsal fin. In slightly<br />

larger specimens (Fig. 65) lateral band distinct,<br />

blotches and bars faint. At about 100 mm SL<br />

(Fig. 66) more or less distinct preorbital stripe<br />

present; lateral band extending distinct from head<br />

to caudal fin. Vertical bars distinct, bar 3 reaching<br />

up to soft dorsal fin base. Round white spots<br />

extend in rows along side; minimally (Fig. 66) one<br />

row along dorsal margin of lateral band from<br />

slightly anterior to bar 2 caudally to end of caudal<br />

peduncle; another row immediately below lateral<br />

band, confined to distance between bars 1<br />

and 2; two rows may be present on dorsum above<br />

lateral line. Full rows of white spots may also be<br />

present along dorsal and ventral margins of lateral<br />

band. Spinous dorsal fin dusky with one row<br />

of light spots; soft portion with two rows. Anal<br />

and pelvic fins hyaline. Dark pigment may be<br />

present along middle caudal-fin rays, otherwise<br />

usually immaculate or with a few yellowish spots<br />

in dorsal lobe. Caudal blotch rounded and slightly<br />

removed from caudal fin base, light spot bordering<br />

caudally.<br />

Lateral band maintained distinct in specimens<br />

100-200 mm SL. At about 150 mm SL bar 1 faded,<br />

except for pigment included in band, bar 3 including<br />

an intensified black spot close to dorsal fin<br />

base, with one or a few highlighted marginal<br />

white spots. At this size caudal blotch may be<br />

completely ringed with white. About four rows<br />

of white spots in soft dorsal fin and in dorsal lobe<br />

of caudal fin. Well preserved specimens with<br />

short greyish halter stripe, margined with white<br />

dorsally. White spots may appear on dorsal head<br />

side.<br />

Non-breeding adults about 200-300 mm SL<br />

(Figs. 67-68) with dorsum and top of head brown,<br />

slighly lighter on side, underside whitish. Bars<br />

1-3 dark grey, narrow, well separated, bars 1-2<br />

below spinous dorsal fin, bar 3 below soft dorsal<br />

fin, extending from close to dorsal fin base distinct<br />

to middle of side, or to white ventral area. Irregularly<br />

round, black blotch dorsally in bar 3,<br />

usually with highlighted white spots along periphery.<br />

Incipient expansions of bar 1 to develop<br />

a blotch, or marginal light areas along bars, precursors<br />

of breeding colour pattern (below), frequent,<br />

but typically only dorsal ocellus in bar 3<br />

and caudal ocellus prominently black. Numerous<br />

white spots seemingly irregularly distributed over<br />

side, varying in number and intensity among<br />

Ichthyol. Explor. Freshwaters, Vol. 17, No. 4<br />

363<br />

specimens; two principal horizontal rows of spots<br />

from caudal peduncle rostrad, often one row on<br />

abdominal side, and always one or two rows on<br />

dorsum. Dark bars devoid of white spots, but<br />

white spots tend to be larger and highlighted at<br />

periphery of dark markings, contributing to irregular-appearing<br />

pattern. Nape, cheek and<br />

opercular bones with numerous white spots with<br />

narrow interspaces; occasionally wanting from<br />

cheek and head side, mostly probably due to<br />

fading in preservative. Dark postorbital spots<br />

present, but appear as interrupted dark stripe and<br />

not ocellated. Preorbital stripe usually indistinct,<br />

occasionally not apparent. Some dark pigment in<br />

mouth angle, but no distinct halter stripe. Spinous<br />

dorsal fin grey with two or three rows of whitish<br />

spots, soft portion with five rows, proximal spots<br />

larger than distal spots. Upper half of caudal fin<br />

with five or six vertical rows of vertically extended<br />

white or yellowish spots. Caudal ocellus<br />

size of eye, usually with white or silvery border<br />

only anteriorly and posteriorly.<br />

Colour pattern characterized by ocellated<br />

blotches or bars on side occurs in both males and<br />

females from ca 250 mm SL (Figs. 69-72). Practically<br />

all specimens above 300 mm SL show this<br />

colour pattern and it is possible that it represents<br />

a final phase rather than a particular breeding<br />

colour pattern. Some specimens over 300 mm SL,<br />

however, possess a colour pattern appearing<br />

intermediate between that shown by most 200-<br />

300 mm SL specimens, and most of those over<br />

300 mm SL, featuring both white spots and rather<br />

faint ocellar blotches or bars with white spots<br />

arranged along margins of dark markings. No<br />

obvious sexual dimorphism, except that light<br />

spots may be completely absent in males and<br />

retained to some extent on dorsum in females;<br />

material available insufficient for decision. Grey<br />

on nape and dorsum, paler grey on side, underside<br />

white. Lips grey, location of halter stripe<br />

marked by grey pigmentation. Light margins of<br />

ocellar markings white or silvery. Bars each form<br />

three major ocellar markings which may be further<br />

subdivided or have smaller ocelli associated<br />

with them. Bar 1 marking an irregularly rounded<br />

deep black blotch bordered dorsally by lateral<br />

line; either perfectly round and then not extending<br />

below level of pectoral fin base or extending<br />

as bar down to white underside (i.e., tracing bar 1);<br />

black roundish ocellated blotch also often present<br />

above lateral line. Bar 2 with roundish ocellated<br />

blotch in series with blotch in bar 1 or, usually,

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