Gulf hake

Where they come from

Gulf hake (Urophycis cirrata) is a cold-temperate Atlantic fish from the western North Atlantic. You see them off the US East Coast, usually hanging around deeper water, soft bottoms, and structure where they can sit tight and ambush food. They are not a typical home-aquarium species, and there is a reason: you are basically trying to run a small public-aquarium style coldwater predator setup at home.

Setting up their tank

Think of them like a bottom-oriented, structure-loving predator that wants room to turn and a place to disappear. They spend a lot of time parked on or near the bottom, then they lunge. Most problems I have seen with hake in captivity come from tanks that are too warm, too bright, too small, or too bare.

• Tank size: big footprint beats tall. I would not even consider an adult in anything under a 180g, and larger is better if you are keeping tankmates.
• Temperature: cold. Aim roughly in the 45-55F range (7-13C) depending on what your animal is acclimated to. Keep it steady.
• Salinity: normal marine (around 1.024-1.026). Stability matters more than chasing a number.
• Filtration: heavy duty. Oversized skimmer, lots of bio media, and serious flow - but do not blast the fish off the bottom.
• Lighting: dim to moderate. They do not need reef lighting and they act more natural without it.
• Cover: tight lid. They can spook and launch, and open-top coldwater systems lose a lot of cooling to evaporation anyway.

For decor, give them caves, overhangs, and broken line-of-sight spots. I like a mix of rockwork that is stable (epoxy or rods if needed) plus some open sand so they can post up and watch. Do not stack rocks on loose sand and call it good. A big fish hitting the glass at night can shift things.

What to feed them

They are meaty-food fish. In the wild they are opportunistic predators, taking fish, shrimp, and other crustaceans. In captivity, you want a varied, marine-based diet and you want to avoid turning them into a picky "only live feeders" fish.

• Staples: thawed silversides, smelt, lancefish, chopped marine fish fillet (not freshwater), squid strips, shrimp, and chunks of clam or scallop.
• Rotation foods: krill (not as the only food), crab pieces, and larger mysis for smaller individuals.
• Avoid: goldfish/rosy reds and other freshwater feeders (fatty acid problems), and oily grocery-store fish as a constant staple.

Most individuals will take tongs once they settle. I start with smaller pieces and keep the movement slow, like a crustacean creeping. Once they connect "tongs = dinner" your life gets easier and you are not dumping food all over the sand.

Feeding schedule depends on size. Juveniles do well with smaller meals more often. Adults can be 2-3 good feedings per week. The easiest way to wreck water quality is to feed like it is a grouper tank and then act surprised when nitrate and gunk explode.

How they behave and who they get along with

Gulf hake is not a community fish. They are calm a lot of the time, but they are still a predator with a big mouth and a fast lunge. If it can fit, it is food. If it cannot fit, it still might get bitten during a feeding frenzy.

• Best kept: species-only, or with other coldwater fish too large to swallow and not inclined to nip fins.
• Bad tankmates: small fish, slow or delicate fish, and anything that hangs out on the bottom and cannot defend itself.
• Inverts: expect losses. Shrimp and crabs are basically expensive snacks.

They are also a bit skittish in bright tanks or high traffic rooms. Give them cover and keep sudden movements down, especially during the first few weeks. Once settled, they get bolder and will meet you at the glass when they learn your schedule.

Breeding tips

Breeding Gulf hake in a home aquarium is in the "nice dream" category. In nature they are seasonal spawners and likely need a temperature and photoperiod cycle, a lot of swimming room, and the right social setup. Even if you got eggs, rearing marine larvae is its own hobby that usually means live plankton cultures and dedicated larval systems.

Common problems to watch for

Most issues come from temperature mistakes, oxygen/filtration falling behind heavy feeding, and rough handling. They are tough in some ways, but they do not forgive chronic stress.

• Heat creep: summer room temps or pumps can push a cold system up faster than you think. Watch your temp trend, not just the number at one moment.
• Low oxygen: warm spikes plus dirty water equals gasping and lethargy. Coldwater systems still need strong aeration and surface agitation.
• Refusing food after arrival: very common. Dim the tank, offer smaller pieces, and do not keep "testing" with a bunch of different foods that rot in the sand.
• Mouth and snout damage: from spooking into glass or from aggressive feeding with tankmates. Use a calmer setup and tong-feed.
• Parasites: wild-caught fish can bring hitchhikers. Quarantine is not optional with a fish like this.

One last practical thing: keep your sandbed clean. Big meaty foods plus a bottom sitter equals leftovers getting buried. I like a siphon pass after feedings (or the next morning) and I run mechanical filtration I can actually clean often. If your tank starts smelling "fishy" between maintenance days, you are already behind.