Post by Deleted on Jan 9, 2020 9:01:54 GMT 5
Pike Pirahna - Serrasalmus Elongatus
The most remarkable feature of this species is its elongated body, setting it apart from all of its relatives. It's torpedo-like body shape is a clue to its behaviour: this species is a very active and agile swimmer and hunter.
There appear to be at least two different color variants of S. elongatus: one with a silvery body, a dark tail fin, humeral spot and facial markings, and greyish dorsal and anal fins. The other variant has a darker coloration of the head and fins, orange to red pectoral fins, and traces of red in the lower face and gill plates. These variants live in habitats ranging from fast-flowing rivers to ponds and lakes with little water movement. This may suggest the existence of two or more seperate (sub-)species, but it still has to be validated scientifically. The differences in appearance may also be caused be differences in habitat, the water chemistry (black water vs. white water), or by differences in the prey items the animals eat in different habitats.
Size: 20 -30 cm
Weapons: Crushing/Slicing Jaws
Baby Whale Catfish
A large mid-swimming nocturnal predatory catfish. It is said these fish will shoal in the wild, but this has not really been seen in captivity.This fish earns its common name well, the body is elongated and stream-lined with a very rounded head. The dorsal fin is relatively small and pointed and the eyes are small. It is silvery-blue in colour, paler on the belly. Body relatively stout, slightly-compressed anteriorly, becoming increasingly compressed
posteriorly. Body depth at dorsal-fin origin approximately 0.23-0.27 of SL, and approximately
equal to HL. Lateral line on body complete, unbranched, and midlateral; It has been featured in River Monster as the Candiru Acu as it will not only eat small fish but even burrow into larger fish eating them alive from the inside out. In the amazon, they are feared even more than Pygocentrus, the schooling pirahna.
Size 20- 30 cm
Weapons: Slicing/Crushing Jaws
The most remarkable feature of this species is its elongated body, setting it apart from all of its relatives. It's torpedo-like body shape is a clue to its behaviour: this species is a very active and agile swimmer and hunter.
There appear to be at least two different color variants of S. elongatus: one with a silvery body, a dark tail fin, humeral spot and facial markings, and greyish dorsal and anal fins. The other variant has a darker coloration of the head and fins, orange to red pectoral fins, and traces of red in the lower face and gill plates. These variants live in habitats ranging from fast-flowing rivers to ponds and lakes with little water movement. This may suggest the existence of two or more seperate (sub-)species, but it still has to be validated scientifically. The differences in appearance may also be caused be differences in habitat, the water chemistry (black water vs. white water), or by differences in the prey items the animals eat in different habitats.
Size: 20 -30 cm
Weapons: Crushing/Slicing Jaws
Baby Whale Catfish
A large mid-swimming nocturnal predatory catfish. It is said these fish will shoal in the wild, but this has not really been seen in captivity.This fish earns its common name well, the body is elongated and stream-lined with a very rounded head. The dorsal fin is relatively small and pointed and the eyes are small. It is silvery-blue in colour, paler on the belly. Body relatively stout, slightly-compressed anteriorly, becoming increasingly compressed
posteriorly. Body depth at dorsal-fin origin approximately 0.23-0.27 of SL, and approximately
equal to HL. Lateral line on body complete, unbranched, and midlateral; It has been featured in River Monster as the Candiru Acu as it will not only eat small fish but even burrow into larger fish eating them alive from the inside out. In the amazon, they are feared even more than Pygocentrus, the schooling pirahna.
Size 20- 30 cm
Weapons: Slicing/Crushing Jaws
