Lake Toba is a large natural lake in North Sumatra, Indonesia, occupying the caldera of a supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, with a surface elevation of about 900 metres (2,953 ft), the lake stretches from 2.88°N 98.52°E to 2.35°N 99.1°E. The lake is about 100 kilometres long, 30 kilometres (19 mi) wide, and up to 505 metres (1,657 ft) deep. It is the largest lake in Indonesia and the largest volcanic lake in the world. Toba Caldera is one of twenty Geoparks in Indonesia, and was recognised in July 2020 as one of the UNESCO Global Geoparks.
Rasbora is a genus of fish in the family Cyprinidae. They are native to freshwater habitats in South and Southeast Asia, as well as southeast China. A single species, R. gerlachi, is only known from an old specimen that reputedly originated from Africa (Cameroon), but this locality is considered doubtful. They are small, up to 17 cm (6.7 in) long, although most species do not surpass 10 cm (4 in) and many have a dark horizontal stripe.
The spotted betta or Java fighting fish is a species of gourami endemic to Indonesia where it inhabits relatively cool, 22‒25 °C (72‒75 °F), highland streams of Java and Sumatra. In 1967, D. S. Johnson reported the species to be common in blackwaters of southern Malaya.
The bala shark also known as the tricolor shark, tricolor sharkminnow, silver shark, or shark minnow, is a fish of the family Cyprinidae, and is one of the two species in the genus Balantiocheilos. This species is not a true shark, but is commonly so called because of its torpedo-shaped body and large fins.
Rasbora baliensis is a species of cyprinid fish in the genus Rasbora. It is found only on Bali in Indonesia where it is restricted to the crater lake, Lake Bratan, which sits at 1231m above sea level.
The twospot rasbora is a species of ray-finned fish in the genus Rasbora native to south east asia. It is one of the members of the Sumatrana group.
Rasbora ennealepis is a species of ray-finned fish in the genus Rasbora. It is endemic to Kalimantan, Indonesia.
Rasbora johannae is a species of ray-finned fish in the genus Rasbora. It is endemic to Kalimantan. This species reaches a length of 3.8 cm (1.5 in).
The copperstripe rasbora is a species of ray-finned fish in the genus Rasbora from Sumatra, Indonesia.
Rasbora patrickyapi is a species of cyprinid fish. It is endemic to Kalimantan, Indonesian Borneo. It inhabits peat swamps and blackwater streams. It grows to 5.7 cm (2.2 in) standard length.
Mindanao rasbora is a species of ray-finned fish in the genus Rasbora endemic to Mindanao.
Rasbora reticulata is a species of ray-finned fish in the genus Rasbora from Sumatra and Nias Island in Indonesia.
Rasbora sarawakensis, also known as the blue line rasbora or Sarawak rasbora, is a species of ray-finned fish in the genus Rasbora which is endemic to the island of Borneo.
Rasbora trifasciata is a species of ray-finned fish in the genus Rasbora which is found in Borneo.
Rasbora trilineata is a species of ray-finned fish in the genus Rasbora. Common names include scissortail rasbora and three-lined rasbora. It comes from Southeast Asia. Its length is up to 15 cm (6").
Pectenocypris micromysticetus is a species of cyprinid fish. It is endemic to Sumatra (Indonesia). It is known only from the Batang Hari River basin. It is common in oxbow lakes and still pools in open or recently flooded areas.
Osteochilus kerinciensis is a species of cyprinid fish. It is endemic to Sumatra (Indonesia). It is known from the upper reaches of the Batang Hari River basin, including upstream tributaries and highland lakes. The specific name kerinciensis refers to its type locality, Lake Kerinci.
Rasbora bindumatoga is a species of ray-finned fish in the genus Rasbora. It inhabits the Aek Sibundung, Batang Toru, and Batang Gadis rivers in Sumatra.
Rasbora vulgaris is a species of ray-finned fish in the genus Rasbora. It is a member of the R. paviana-subgroup, which comprises five species from Indochina and the Malay Peninsula
