Sulawesi

The spotted barb, Barbodes binotatus, is a cyprinid ranging from Myanmar and Thailand through the Greater Sunda Islands to the Philippines. So ubiquitous across its range that it's often called simply 'common barb', it occurs from sea level to at least 2000 m in habitats from fast-flowing hill streams to irrigation canals and floodplain ponds. The basic pattern of a dark spot at the dorsal-fin origin and another on the caudal peduncle varies with origin.

The Celebes ricefish, Oryzias celebensis, lives in rivers and streams of southwestern Sulawesi, Indonesia, with a further record from Timor. It is mostly found in slow-moving or standing waters, often where aquatic plants proliferate. Infrequently available in the hobby, it is exported on occasion and sometimes referred to as 'Celebes medaka'.

Oryzias eversi is a ricefish known only from a single karst pool in the Salo Sadang drainage, Tana Toraja, South Sulawesi, Indonesia. The pool holds still, transparent water and is surrounded by rainforest. Nuptial males develop a blackish belly and posterior body, and females show pelvic brooding behaviour. The species is not common in the aquarium hobby.

The Javanese ricefish, Oryzias javanicus, ranges through Peninsular Thailand, Malaysia, Singapore and Indonesia as far east as Lombok and Sulawesi. Typically found in coastal, normally brackish, streams, pools and mangrove swamps, it tolerates a wide salinity range and has also been recorded in fresh water. It is exported on occasion and sometimes referred to as the 'blue-eyed ricefish'.

Sarasin's buntingi, Oryzias sarasinorum, is a ricefish endemic to Lake Lindu in Lore Lindu National Park, Central Sulawesi, Indonesia. Also known as Sarasin's minnow, it is exceptionally rare both in nature and the aquarium hobby. It was formerly placed in Xenopoecilus, and a broad silvery lateral stripe and 70-75 lateral scales separate it from all other Oryzias.

The Wolasi ricefish, Oryzias wolasi, is known from four localities south of Kendari in Southeast Sulawesi, Indonesia. Discovered in 2009, it was referred to as O. sp. 'Kendari', O. sp. 'neon' or O. sp. 'Sulawesi' before description. A member of the O. woworae species group, it lives in karstic streams ranging from swift waterfalls to the remnant pools of an ephemeral river.

Daisy's ricefish, Oryzias woworae, is known only from a single stream on the island of Muna, Southeast Sulawesi, Indonesia. At 25-30 mm it is the most diminutive Oryzias known from Sulawesi. It caused something of a sensation when it first appeared in the trade shortly after description, and was collected schooling in a still pool of a karstic forest stream.

The Asinua ricefish, Oryzias asinua, is known only from the Sungai Asinua in Southeast Sulawesi, Indonesia. The type series was collected along the shores and in small marginal pools on the adjacent floodplain. A member of the O. woworae species group, it differs from O. wolasi in that both sexes have orange-coloured olfactory epithelia, and it has a relatively slender body.