Long-barbel torrent catfish

Where they come from

Long-barbel torrent catfish are built for whitewater. They come from fast, cold streams in the eastern Himalaya region of China, clinging to rocks with that flat belly and big pectorals. Think clear water, high oxygen, strong current, and lots of rounded stones. Seasonal snowmelt bumps flow and drops temps, so they are used to swings in speed more than swings in heat.

Setting up their tank

Plan for current first, then everything else. A calm community setup will frustrate these fish and they will sulk in corners.

• Tank size - shoot for at least a 90 cm long tank. More floor space is better than height.
• Flow - 10-20x turnover per hour. Use a powerhead or wavemaker pointed along the length to make a river. Add big sponge prefilters so nobody gets sucked in.
• Oxygen - heavy aeration. A big airstone or venturi helps. Surface agitation is your friend.
• Temperature - 16-22 C is the sweet spot. Try not to let it sit above 24 C for long.
• Water - pH 6.6-7.6, GH 3-10 dGH. Keep it clean and well-aged. Zero ammonia and nitrite, low nitrate.
• Substrate and decor - sand or fine gravel with rounded cobbles and stacked slate for crevices. Leave open lanes for flow.
• Cover - tight lid. They climb, and they find cable gaps.
• Lighting - moderate. Too bright and they hide. Dither fish can help them feel bolder.

Maintenance matters more than fancy gear. Big weekly water changes, vacuum around rocks, and rinse prefilters often. These cats hate mulm building up under stones.

What to feed them

They are insect and invertebrate hunters that graze the bottom in current. New imports can be picky, but they come around with consistent offerings and flow to carry food to them.

• Go-to foods - live or frozen blackworms, bloodworms, daphnia, mysis, chopped earthworms, and small pieces of mussel or prawn.
• Prepared foods - sinking carnivore pellets, quality soft pellets, and Repashy gel blends like Bottom Scratcher or Spawn & Grow.
• Feeding style - target feed with tongs or a turkey baster into the current so the food drifts past their station.
• Schedule - small meals 1-2 times daily. They do better with frequent, modest feeds than big dumps.

How they behave and who they get along with

These are cling-and-dart cats. They face into the current, scoot between rocks, and get feisty at feeding time. Expect short chases and posturing. With enough cover and flow, it settles down.

• Good companions - cool-water, high-flow fish that do not mind a treadmill: danios, white clouds, hillstream loaches, Garra species, Rhinogobius-type gobies.
• Keep as - a single or a small group of 3-6 added together. Provide more hides than fish to spread out territories.
• Avoid - slow, long-finned fish, warm-water species, timid nano fish, and tiny shrimp or fry that can be seen as snacks.

Breeding tips

Home breeding is rare, and I have not produced fry from this species. They likely spawn under rocks after seasonal cues. If you want to try, mimic winter-to-spring changes and give them structure.

• Seasonal cue - run them cooler at 16-18 C for several weeks, then slowly raise to 20-22 C while ramping up flow and feeding heavily.
• Structure - piles of rounded stones and slate with tight crevices. Place a powerhead to wash water through those gaps.
• Separation - if eggs appear, pull adults or lift the stone to a hatching box with strong aeration. Current over the eggs is key.
• Food for young - newly hatched brine shrimp and microworms, then crushed pellets once they size up.

Common problems to watch for

• Low oxygen - first sign is rapid gilling and hanging near the surface or outflow. Add air immediately and cool the water.
• Overheating - above 24 C for long stretches stresses them. Use a fan or a chiller in hot months.
• Barbel and fin erosion - usually from dirty substrate or sharp rocks. Keep stones rounded and vacuum under them.
• Internal parasites - new imports that will not hold weight even when eating. Quarantine and treat if needed.
• Shipping stress - they may refuse food for a few days. Keep the lights low, current high, and try live blackworms to kick-start feeding.
• Injury - they can wedge into intakes. Always use sponge guards and cover gaps around equipment.