Fig. 5

Ventral views of a select 18 species of snailfishes, showing variation of the pelvic suction disk (labeled in Figs. 1 and 2). Scans are ordered by maximum habitat depth, from shallowest to deepest. Images are not to scale, see disk lengths below for relative sizes. Brightness is standardized across scans and is indicative of specimen density. a Liparis florae, maximum depth 15 m, demersal, temperate, disk length 6.26 mm, b Liparis greeni, maximum depth 21 m, demersal, temperate, c Liparis rutteri, maximum depth 73 m, demersal, temperate, disk length 5.75 mm, d Liparis bristolensis, maximum depth 144 m, demersal, temperate, disk length 5.73 mm, e Liparis pulchellus, maximum depth 183 m, demersal, mid-latitude, f Crystallichthys cyclospilus, maximum depth 312 m, demersal, temperate, disk length 9.38 mm, g Liparis tessellatus, maximum depth 346 m, demersal, temperate, disk length 5.55 mm, h Liparis fucensis, maximum depth 388 m, demersal, temperate, disk length 3.74 mm, i Careproctus comus, maximum depth 400 m, demersal, temperate, disk length 2.58 mm, j Temnocora candida, maximum depth 400 m, demersal, temperate, k Allocareproctus unangas, maximum depth 465 m, demersal, temperate, disk length 6.08 mm, l Liparis fabricii, maximum depth 520 m, sometimes pelagic, polar, disk length 5.80 mm, m Careproctus acanthodes, maximum depth 582 m, demersal, temperate, n Allocareproctus tanix, maximum depth 620 m, demersal, temperate, disk length 5.24 mm, o Liparis tunicatus, maximum depth 620 m, demersal, polar, disk length 6.93 mm, p Careproctus furcellus, maximum depth 1270 m, demersal, temperate, q Careproctus colletti, maximum depth 1556 m, demersal, temperate, r Careproctus cypselurus, maximum depth 1993 m, demersal, temperate, disk length 2.28 mm. Each specimen shown has a ventral suction disk, though some are greatly reduced in size and density