- The
operculum is a
series of
bones found in bony fish and
chimaeras that
serves as a
facial support structure and a
protective covering for the gills;...
-
smaller versions of
angelfish (Pomacanthidae), but
unlike these, lack
preopercle spines at the gill covers. Some
members of the
genus Heniochus resemble...
- or "covering" and
dasys meaning "rough", a
reference to the
serrated preopercle.
There are
currently 34
recognized species in this genus:
Pomadasys aheneus...
- a fish (on the
inner surface of the opercle, near the
junction of the
preopercle) as well as a
reduced "false" gill in some gastropods. In
teleost fish...
-
jawless fish), and the ch****,
which extends from eye to
preopercle. The
operculum and
preopercle may or may not have spines. In
sharks and some primitive...
- they have
relatively large eyes. Red and
silvery colours dominate. The
preopercle spines (near the gill-opening) are
venomous and can give
painful wounds...
-
angelfish are
distinguished from
butterflyfish by the
presence of
strong preopercle spines (part of the gill covers) in the former. This
feature also explains...
- crevices, caves, or
under ledges. Red and
silvery colours dominate. The
preopercle spines (near the gill opening) of the
members of the
subfamily Holocentrinae...
- area, the
mouth extending as far as
below the
middle of the eye. The
preopercle has fine
serrations on its
margin and is
evenly rounded,
while the gill...
- body, the
standard length of its body is 2.8 to 3.3
times its depth. The
preopercle is
rounded with fine
serrations along its edge with the
lower edge being...
