< h1 class="ql-align-center" > overview</h1>
Satan and Shadong duck-billed
Scientific name: Brachyplatystoma filamentosum
English name: Piraiba; pirahiba; filhote(Brazil); salton(Peru)
Distribution: South America
Size: 3 meters
One of the largest duck beaks in the world, distributed from the estuary to the upper reaches, the huge body will swim like a shark, the type produced in the estuary is silver body with small spots, while the upper individuals are large spots in a marble-like distribution, and the tail fin is very long, quite special!!!
2004.6(60cm)
<h1 class="ql-align-center" > Satan's growth profile</h1>
80 size (cm) Weight (kg) 10
100-15
120-25
150-40
200-100
<h1>assignment</h1>
The type site is 'Rio Tefé Beach, Lago Mucura, Supiã-Pucu, Tefé' located in the Amazonian state of northwestern Brazil, but this species is widely distributed in most parts of the Amazon Basin, from the estuary near Benin to Iquitos in the Loreto region of northern Peru.
It also appears in most major Amazon tributaries, including Trombetas, Madeira, Purus, Negro, Manacapuru, Purus, Tefé, Putumayo, Juruá, Jutaí, and Içá.
<h1>habitat</h1>
Most inhabit larger, deeper channels.
<h1>Maximum standard length</h1>
The largest official recorded sample measured 880 mm, but may become larger.
<h1>Aquarium size</h1>
This species is only available in public aquariums and a very small number of private aquarists, so we do not offer recommended aquarium sizes.
<h1>maintenance</h1>
The choice of decoration is as much as personal preference, although a well-designed planting setup is obviously not possible.
A sandy substrate with some chunks of driftwood, or a completely bare arrangement, may be the most popular choice among privately owned aquariums, but if the water quality remains constant and the lighting is not too bright, this species is relatively less picky. Consideration should be given to the use of large, reliable filtration systems and strict maintenance regimes.
<h1>Water conditions</h1>
Temperature: 22 - 28°C
pH： 6.0-8.0
Hardness: 18 - 357 ppm
Fine-tune Satan
<h1>diet</h1>
Almost entirely fish-eating lorecidariids and other benthic fish of nature, but most samples are easily adapted to dead substitutes such as shrimp/shrimp, shellfish, cuttlefish, silverfish, larger white fish strips, etc. in aquariums. Adults only need a maximum of one meal per week.
<h1>Behavior and compatibility</h1>
Return to Satan at the Dragon Fish Park
Only large enough species are retained to avoid predation.
<h1>Sexual dimorphism</h1>
Unknown.
Satan eats loach
<h1>reproduction</h1>
It has never been bred in captivity. In nature, homologs B. vaillantii and B. rousseauxii are known to undergo extensive seasonal upstream migrations, which are directly related to the reproductive cycle, but B. filamentosum does not appear to do so (Petrere Jr. et al., 2004).
<h1>remark</h1>
2005.6(85cm)
This species, in addition to the homolog b. Brainosum, which looks very similar due to its small adult size (B. filamentosum can grow to almost 3 m), the shorter maxilla (which never extends beyond the base of the fat fin) exceeds the base of the fat fin), the moderately forked lobes of the same size (relative to the deeply lobed caudal fin, the upper lobe is usually longer than the lower part), the adult body color is very dark, and the dorsal side suddenly reverses along the side (relative to the dark back), Gradually reverse along the side into a fainter ventral shadow).
These two species are the only members of the genus, in which the larvae show dark body spots or spots above and above the lateral line, which are in B. Capapretum is relatively larger than B. filamentosum.
The great childish Satan
Brachyplatystoma spp。 Distinguish it from all other catfishes by two synapmorphies. The first includes several morphological features associated with the skull, in particular the mandibular suspension (which connects the mandible to the skull) greatly expands in the middle, forming large plates close to the parasitic bone, similarly enlarging hyomandibula and metastygoid.
Satan of the flavoured meat, a fine seed for the estuary
The second is the formation of elongated filaments formed by simple rays of single, unbranched rays on the two caudal fin leaves of juvenile fish and sub-adults. These shorten or disappear in adult specimen B. vaillantii, B. filamentosum, B. rousseauxii, and B. capapretum but retained in B. juruense, B. platynemum and B. salamander.
Little Satan