catfish for brakish

I think that val is okay for brackish, but I'm not sure. As for cats, I would go with some of the Arius genus of shark wannabes.
 
I have 3 Silver Shark Catfish or Jordan's Catfish in a tank with a Target fish.
They catfish grow fast. I got them when they were about an inch long and now they are 6", which is half their max. size.
They like a lot of free swimming space. I have them in current running from one side of the tank to the other (left to right). It simulates a stream. (The fish swim in one spot, and lay on the bottom when resting.)
 
If you're looking for s fish to eat algae, forget it, there is none that can tolerate BW. You'll have to do your own maid service.
 
Nope, there are no brackish catfish other than the Black fin Shark (goes by MANY other common names). That means no Plecos, Cories, Loaches, Farowellas, Whiptails, etc. Other than Mollies, some Killies, and the Blenny there are no other algae eaters other than Scats but they require saltwater as adults. Hope this helps.
 
Aspredo aspredo
Banjo

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Aspredo aspredo (Linnaeus, 1758)
Family: Aspredinidae (Banjo catfishes), subfamily: Aspredininae
Order: Siluriformes
Class: Actinopterygii (ray-finned fishes)
Max. size: 38.3 cm SL
Environment: demersal; brackish; marine
Climate: tropical
Importance: fisheries: minor commercial; aquarium: commercial
Distribution:
Gazetteer Western Atlantic: Venezuela to northern Brazil; including the lower portions of coastal rivers.
Biology: Benthic fish occurring on sandy-muddy bottoms of brackish waters. Found on soft bottoms of shallow turbid water near river mouths. The species has a peculiar mode of egg incubation wherein the female banjo catfish carries the eggs firmly attached to the underside of the body. This seems to be an adaptation to facilitate the oxygenation of the eggs in muddy environments. Reproduction probably occurs during the earlier part of the year.

Platystacus cotylephorus
Banded banjo

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Platystacus cotylephorus Bloch, 1794
Family: Aspredinidae (Banjo catfishes), subfamily: Aspredininae
Order: Siluriformes
Class: Actinopterygii (ray-finned fishes)
Max. size: 31.8 cm SL (male/unsexed; Ref. 36695)
Environment: demersal; brackish; marine; pH range: 6.8 - 8.2; dH range: 12.0 - 35.0
Climate: tropical; 22 - 25°C
Importance: fisheries: of no interest; aquarium: commercial
Distribution:
Gazetteer Western Central Atlantic: Venezuela to northern Brazil; including the lower portions of coastal rivers.
Biology: Occurs mainly in brackish water. Found on soft bottoms of shallow turbid water near river mouths. Reported to migrate from estuary into freshwater, but actual spawning apparently takes place in brackish water (Ref. 6868). The species has a peculiar mode of egg incubation wherein the female banjo catfish carries the eggs firmly attached to the underside of the body. This seems to be an adaptation to facilitate the oxygenation of the eggs in muddy environments. Reproduction probably occurs during the earlier part of the year.
 
Plotosus limbatus
Darkfin eel catfish

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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

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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

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"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.
 
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