Batasio Fluviatilis

Datasheet

General Description

Batasio Fluviatilis, previously considered synonymous with Batasio Havmolleri, belongs to the family Bagridae within the order Siluriformes. Identified by its laterally-compressed body, the species showcases distinct sensory pores on the head, a narrow mental region, and specific bone structures in the mouth area.

Aquarium Setup

To house Batasio Fluviatilis effectively, a tank of at least 160 liters is required. The ideal setup mimics a flowing river, encompassing a mix of rocks, gravel, and large boulders. Addition of driftwood, roots, and robust aquatic plants aids in replicating its natural habitat. Pristine water conditions with ample oxygen levels and consistent water movement are vital, necessitating proper filtration and weekly water changes.

Behaviour

Not inherently aggressive, Batasio Fluviatilis thrives best in the company of peaceful, similarly sized schooling fish such as cyprinids, characids, and livebearers. Compatible tank mates include certain catfish species like Akysid or Sisorid catfishes and balitorid loaches. Careful selection is crucial as some species may exhibit territorial behavior or excessive aggression.

Feeding and Diet

In the wild, Batasio Fluviatilis sustains itself on small aquatic crustaceans, worms, insect larvae, and zooplankton. Captive diets should primarily comprise live or frozen foods like chironomid larvae, bloodworms, Tubifex, Artemia, and mosquito larvae. While some success has been noted with prepared sinking foods, newly imported specimens may initially reject them.

Reproduction & Dimorphism

Successful breeding attempts have been documented with Batasio Fluviatilis through simulated environmental cues. Spawning can be induced by significant water changes with cooler water temperatures when the fish display breeding behaviors. Males exhibit visible elongate genital papilla anterior to the anal fin. Eggs are scattered randomly and typically hatch within two days.

Habitat and Distribution

Preferring headwater streams and upper reaches of smaller rivers, Batasio Fluviatilis is typically found in fast-flowing, oxygen-rich waters with substrates of rocks, sand, and gravel. Native to locales beneath the Isthmus of Kra in Thailand and Peninsular Malaysia, these streams may experience temporary turbidity during heavy rainfall due to increased flow rates and suspended debris.