Serrated Piranha - Serrasalmus serrulatus
Species name: Serrasalmus serrulatus
Synonym: Serrasalmo scapularis ...
Serrate: Having sawlike notches along the edge.
Sessile: Sessile means the organism is attached to the substrate at the bottom of the ocean and therefore cannot move around. Pelagic refers to living in the water of the ocean above the bottom.
Use a serrated knife or small saw to cut the cold blocks or sheets, or you can work with heated polystyrene, with a portable blowtorch or hot-air paint stripper. Be careful when handling polystyrene as it can melt, catch fire, and emit toxic vapors.
I'd noticed a few things about him that weren't quite right, didn't have the protruding jaw, his teeth were short and stumpy instead of sharp and serrated, his eyes sat slightly lower in his head and he'd lost the red belly, ...
Preopercular margin finely serrated. During the reproductive season (which lasts from May to July) males get aggressive.
Stingrays are so-called for their serrated, dagger-like stinger located on the top of and lying flat towards the end of the tail.
Males develop a slightly serrated dorsal fin and a double tipped gyrate caudal fin, but this isn't usually visible until it reaches 2" (5 cm) long.
The piranhas belong to a sub-family called the Serrasalmidae (serra means 'saw', 'sawed' or 'serrated', salmus means 'salmon'), a name based on the fact that all members have a sharp, ...
True SAE's have a serrated stripe that runs all the way to the tip of the tail. I have 10 SAE's in my 380 liter and they are constantly looking for algae or leftover food to nibble on. They never stop! ...
A serrated dorsal fin runs along most of the body until it meets the caudal fin. The pectoral fins attach just behind and below the gill openings and are the primary means of locomotion, providing a slow, graceful appearance. P.
The Parts - Water first enters the inner box, which sits inside the aquarium and usually has a serrated top edge. Any water that is higher than that edge will flow into the box.
Ctenoid scales, typical of fish such as perches and basses, have a serrated / spiky edge, whilst the cycloid scales, typical of carps and salmonids, ...
serratus, a reference to the highly-serrated pectoral spine compared with that of C. duplicareus that is moderately serrated. In the above photos, C. duplicareus is the left photo and C. serratus the right photo.
Caution should be taken when trying to net these fish. Their serrated gill covers become flared when excited. If they do get caught in the net just put it back into the tank and the fish should release itself.
The plants leaves change completely when grown out of the water, the very soft lobed leaves become smaller and serrated with lots of glandular hairs.
This spine has a serrated edge in juveniles. Juvenile Gray Angels are quite different in coloring from adults. These fish have black coloring with a concavely rounded yellow caudal fin and light yellow bars.
You can distinguish Crenicichla tesay from its close relatives by the existence of a serrated posterior preopercle border, the number of scales on the E1 row, the length of the snout, and the colour pattern which consists of a suborbital stripe, ...
When netting, one must be very careful of the spines on the pectoral fins which have serrated edges. These can become easily entangled in netting and may cause injury to the fish or hobbyist.
If you grab them by any part of the body other than the head they will attempt to slice your fingers by bending around and trapping your finger between their serrated lateral scutes and one pectoral fin ray. This can be very painful indeed.
The Pictus Cat is a memeber of the antenna catfish group and usually has a pale to gray body with a black spotted pattern. The pectoral fins are serrated, so it is recommended... [Read more]
Redtail Cat ...
There are two main types of scales, both are round, but in one the edges are serrated and the other are completely smooth. In the Mailed Catfish the scales are replaced by bony plates. In some other species there are no scales at all.
R: This catfish has serrated pectoral fins that easily get caught in a net or pierce the skin. The Spotted Pimelodus has the ability to make an audible, creaking sound.
DC: 5. A hardy catfish that requires an occasional feeding of live foods.
 See also: Fish, Water, Aquarium, Species, Plants
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