Macarty’s loach

Maintenance
Most importantly the water must be clean and well-oxygenated so we suggest the use of an over-sized filter as a minimum requirement. Although torrential conditions are unnecessary turnover should ideally be in excess of 10 times per hour so supplementary powerheads and airstones can be used to achieve the desired flow/oxygenation.

Base substrate can either be of gravel, sand or a mixture of both to which should be added a layer of water-worn rocks and pebbles of varying sizes. Aged driftwood is also suitable but avoid new pieces since these usually leach tannins which discolour the water and reduce the effectiveness of artificial lighting. The latter must be strong to promote the growth of algae and associated micro-organisms habitually grazes biofilm, and some enthusiasts even maintain an open filter sponge in the tank to provide an extra food source.

Although not a feature of the natural habitat aquatic plants can be used with hardier species such as Microsorum pteropus (Java fern), Crinum and Anubias spp. likely to fare best. The latter are particularly useful as their leaves tend to attract algal growth and provide additional cover for the fish. Since they require stable water conditions and graze biofilm Pseudogastromyzon spp. should never be added to immature set-ups and a tightly-fitting cover is necessary since they are able to climb glass to an extent. While regular partial water changes are essential the rest of the tank needn’t be kept too clean and algae should ideally be allowed to grow on all surfaces except the viewing pane.

Water Conditions
Temperature: Annual air temperatures across its native range average between 61 – 83.7°F/16.1 – 28.7℃. For general aquarium care a water temperature value of 66 – 75°F/18.9 – 23.9°C is therefore recommended, though it can withstand warmer conditions provided dissolved oxygen levels are maintained.

pH: 6.0 – 7.5

Hardness: 1 – 12°H