gill cover การใช้

• It owes its name from the out-turned appearance of its gill covers.
• The gill cover should figuratively extend quite far towards the tail.
• Dark spots radiate from around the eyes into the gill covers and snout.
• Some have a small dark spot near their gill covers.
• The back of these eggs possess special'gill cover'structures that provide the developing insect with oxygen.
• It has a large mouth and spiny gill covers.
• A black streak may extend from the snout, across the eye, and towards the gill covers.
• Additionally the infected fish may hold its gill covers open and scratch its gills on rocks.
• They live up to 30 years and have no pelvic or pectoral fins, or gill covers.
• The headgrowth should seem to begin from the bottom of the gill cover and move upward.
• The Fueguian sprat has a lower jaw slightly projecting, and a gill cover without bony radiating striae.
• It has two rows of sharp gill covers are distinctive oval holes that open into pouch-like cavities.
• The opercula or gill covers possess a small, flat spine sharp enough to cut unwary fishermen's fingers.
• The gill openings are extremely small and placed near the upper posterior angle of the gill cover.
• The first quarter of the redtail surfperch s length includes a small upturned mouth, eye, and gill cover.
• All toadfishes possess sharp spines on the first dorsal fin and on the opercle ( gill cover ).
• The venom glands are located on its first dorsal fin, which is completely black, and on the gill cover.
• Butterflyfishes look like smaller versions of angelfish ( Pomacanthidae ), but unlike these, lack preopercle spines at the gill covers.
• It is named for the bright blue edge to the operculum or gill cover, which is present in both sexes.
• Unfortunately, for both fish and person, when it finds itself in the urethra it opens its gill covers, and gets stuck.