Plotosus limbatus
Darkfin eel catfish
Plotosus limbatus Valenciennes, 1840
Family: Plotosidae (Eeltail catfishes)
Order: Siluriformes
Class: Actinopterygii (ray-finned fishes)
Max. size: 41.0 cm SL (male/unsexed; Ref. 3879)
Environment: demersal; freshwater; brackish; marine
Climate: tropical
Importance: fisheries: minor commercial
Distribution:
Gazetteer Western Indian Ocean and Arabian Sea: ranging from the Madras and Malabar coasts of India to the east coast of Africa. Reaches as far south as Knysna, South Africa (Ref. 3670).
Biology: Occurs in estuaries and along open coasts (Ref. 30573). Juveniles form dense aggregations. Feeds on crustaceans, mollusks, and fishes (Ref. 30573). Dorsal and pelvic fins are venomous (Ref. 30573).
Dangerous: venomous
Ompok bimaculatus
Butter catfish
Family: Siluridae (Sheatfishes)
Order: Siluriformes
Class: Actinopterygii (ray-finned fishes)
Max. size: 45.0 cm SL (male/unsexed; Ref. 4833)
Environment: demersal; freshwater; brackish; pH range: 6.0 - 8.0; dH range: 4.0 - 28.0 ; depth range 0 - 2 m
Climate: tropical; 20 - 26°C
Importance: fisheries: commercial; aquaculture: commercial; aquarium: commercial
Distribution:
Gazetteer Asia: Afghanistan to China, Thailand and Borneo. Endangered status in the Western Ghats, India (Ref. 44150).
Diagnosis: Dorsal soft rays (total): 4-4; Anal soft rays: 54-74. Two pairs of barbels; maxillary barbels reahing pelvic fins or anal fins; mandibulary barbels minute, about as long as diameter of eye. Eyes small, covered by skin. Dorsal and pelvic fins small; anal fin long; pectoral fins well developed (Ref. 4792); vomerime teeth in 2 patches (Ref. 12693). Brown, usually marmorated body with conspiuous round black blotch above pectoral base (Ref. 43281). Also Ref. 44150.
Biology: Occurs in streams and rivers of all sizes with currents ranging from sluggish to moderate (Ref. 12693). Found in quiet, shallow (0.5-1.5 m), often muddy water, in sandy streams, rivers and tanks (Ref. 6028). Also occurs in canals, beels and inundated fields (Ref. 1479). Moves into freshly inundated habitats during the flood season (Ref. 12693). Feeds on vegetable matter, fish (Ref. 6028), crustaceans and mollusks (Ref. 12693). Sold fresh or smoked on skewers (Ref. 12693).
Ompok fumidus (Located in similar regions as the one below)
Ompok jaynei
Family: Siluridae (Sheatfishes)
Order: Siluriformes
Class: Actinopterygii (ray-finned fishes)
Max. size: 15.2 cm SL (male/unsexed; Ref. 41243)
Environment: demersal; freshwater; brackish
Climate: tropical
Distribution:
Gazetteer Asia: from Sarawak, northern Sabah and Kalimantan Timur.
Diagnosis: Dorsal soft rays (total): 4-4; Anal soft rays: 50-58; Vertebrae : 44-47
Biology: Recently collected specimen found in shallow blackwaters in a peat swamp heavily disturbed by logging activities.
Synodontis multipunctatus
Cockoo Synodontis
"Perhaps some salt (1/2 - 1 teaspoon per 10 L; 2.5 gal of water)"
This would be the same as the salt for Cichlids.
Search google; Synodontis multipunctatus salt.
It pulls up articles that breeders and hobbiest are using salt in their water.