There are currently three recognized species in this genus: •
Oloplotosus luteus Gomon &
Roberts, 1978 (Pale yellow tandan) •
Oloplotosus mariae Weber, 1913 (Maria's tandan) •
Oloplotosus torobo Allen, 1985 (Kutubu tandan)
O. luteus originates from the upper
Fly River in
New Guinea,
O. mariae is known from
Western New Guinea, and
O. torobo is known from the
Soro River of
Papua New Guinea.
Otoplotosus species grow to about 15.0–20.0
centimetres (5.9–7.9
in)
SL.
O. luteus occurs mostly from moderate to fast-flowing, gravel-boulder bottom creeks in mountainous tributaries of the
Ok Tedi River.
O. mariae occurs in clear, rocky streams in deeper pools, usually in hilly or mountainous terrain.
O. torobo is known only from the
type locality; specimens were captured in 1983 from shallow water with a soft, muddy bottom and abundant aquatic vegetation. It is considered a
vulnerable species. ==References==