-
body = v compressed disc
short, blunt snoutsmall, brush-like teethpreopercle: 1 large spineno large scale at base of pelvic -
body = v compressed disc
long narrow snoutmouth small; small brush-like teethpreopercle without spinelarge scale at base of pelvic -
body deep, very compressed
head shortD V-IX (short), 18-40, deep notchteeth brushlike, in bandsA III, 16-24 -
body quadrangular, v compressed
head profile steepD: 1st spine points forwards, deep notch after spinesmouth small, horizontal, not projectableA IV -
small horns over eyes
body round, v compressedbroad black & white barsD: very long front filamentlong slender snout