- two parts. An
adipose fin is
usually present. The
Sternoptychinae have
preopercular spines and blade-like pterygiop****s in
front of the
dorsal fin. Their...
-
representatives of the
other species,
among other things, by the
shape of the
preopercular organ. In Sun****a aeta it is
formed by a distinct,
almost semi-circular...
-
cryptic patterns.
Their bodies are
elongated and scaleless. A
large preopercular spine is
characteristic of this fish, and has been
reported to be venomous...
- the Obriminae,
which surrounds the
actual ovipositor. The
shape of the
preopercular organ located on the
seventh sternite of the
abdomen is species-typical...
-
projecting ****. The gill
cover has no
supplemental preopercular spine absent but all 5
preopercular spines are
roughly equal in length,
there is a supracleithral...
-
Pacific Ocean. All
species of
Neenchelys have two
rather than
three preopercular pores (except for N.
parvipectoralis which usually has one), a significant...
-
There is a
supplemental preopercular spine and the
uppermost preopercular spine is the
longest with the
second preopercular spine being often absent...
- and an
extraordinary spiny structure on the top of
their gill
cover (
preopercular spine).
Their body has an
orange or red
colour dorsally with
yellow to...
- and acanthus,
which means "thorn" or "spine", a
reference to the
three preopercular spines this fish possesses, in fact, it has only two such spines. Taenianotus...
- years. The
adults have venom-bearing
spines on the
infraorbital bone,
preopercular bone and in the dorsal, anal and
pectoral fins. The
South Australian...
