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DistributionWestern Pacific and Indian Ocean, mostly in the Indonesian and Australian regions. Body usually velvety due to modified, prickly scales. With knoblike spines on head. Unbranched fin rays. Anal fin spines usually not distinct or lacking. Dorsal fin origin above eye or almost so, except in the genera Adventor and Peristrominous. First 3-5 dorsal fin spines usually appear segregated, either elevated or largely without membrane connection with the rest of the spinous dorsal. The first 3 or 4 spines form a separate fin in four species. Pelvic fin with less than 4 soft rays. Anterior isthmus with fleshy extension in most species. No palatine teeth. No gill slit behind the last arch.