Synodontis contracta

Big-nosed Upside-down Catfish

Classification

Mochokidae

Distribution

Found only in the Democratic Republic of Congo and the Republic of Congo. It occurs in small ponds, backwaters and creeks, often in large numbers.

Habitat

Found only in the Democratic Republic of Congo and the Republic of Congo. It occurs in small ponds, backwaters and creeks, often in large numbers.

Maximum Standard Length

3″ (7.5cm)

Aquarium SizeTop ↑

24″ x 12″ x 12″ (60x30x30cm)

Maintenance

A dimly lit aquarium with a soft substrate and rocks, pieces of driftwood and twisted roots arranged to form hiding places suits this species. Broad-leaved plants, such as Anubias or Echinodorus and floating vegetation are also recommended, as the fish like to roost under these.

Water Conditions

Temperature: 71-81°F (22-27°C)

pH: 6.2-7.2

Hardness: 3-15 dH

Diet

Synodontis are omnivorous and are most unfussy in terms of feeding. Frozen, live and dried foods are all accepted. It also relishes vegetable matter in the form of shelled peas, cucumber etc., which it will rasp at with the teeth in its lower jaw. Unlike most others in the genus, S. contracta will often feed from the surface in its typical inverted style.

Behaviour and CompatibilityTop ↑

One of the most gentle members of the genus, S. contracta can be combined with most peaceful species successfully. The most appropriate tankmates include African tetras, dwarf cichlids such as Pelvicachromis or Anomalochromis and small mormyrids. This species should be maintained in groups of at least 3-4 individuals, as this will give them confidence and encourage them to be seen more often.

Sexual Dimorphism

Cannot be sexed by the genital papilla technique as it is too small, although the same dimorphism is apparent. It is therefore difficult to sex, although adult females are generally plumper than males.

Reproduction

Has been spawned in aquaria but the eggs did not hatch.

NotesTop ↑

Often confused with the similar S.nigriventris, this species is imported infrequently. It is easily distinguished from nigriventris by its larger eyes and broad mouth and head. These features give rise to the common name “Big-nosed upside-down catfish”. S. contracta spends the majority of its time swimming in an inverted position and this, along with its exaggerated facial features,make it a characterful and interesting addition to the community aquarium. It is also known as the Bug-eyed Squeaker.

One point that should be noted, is that this species can be quite delicate and susceptible to disease when it is first imported. Extra care with regards to water quality should be taken during the acclimatisation period. Once settled, it usually proves quite hardy.