Redbanded seabream
Pagrus auriga
Redbanded seabream features a silver body with distinct red horizontal stripes and a sharp, pointed snout.
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About the Redbanded seabream
This is a big, chunky seabream that cruises rocky and rubble bottoms and eats crunchy stuff like crabs, shrimp, and mollusks. Super cool fish in the wild, but it gets way too large and boisterous for normal home aquariums - it is really more of a public-display kind of fish.
Also known as
Quick Facts
Size
80 cm
Temperament
Semi-aggressive
Difficulty
Expert
Min Tank Size
450 gallons
Lifespan
10-20 years
Origin
Eastern Atlantic and southwestern Mediterranean
Diet
Carnivore - crustaceans, mollusks (including cephalopods), meaty frozen foods
Water Parameters
16-24°C
8-8.4
8-12 dGH
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This species needs 16-24°C in a 450 gallon tank. Use our heater calculator to find the right wattage.
Calculate heater sizeCare Notes
- Give it a big, mature marine tank (think 180+ gallons) with lots of open swimming room and some rockwork it can duck into - they get chunky and cruise nonstop.
- Run cool-to-temperate saltwater, not tropical: aim around 64-72F, salinity 1.023-1.026, pH 8.1-8.4, and keep nitrate low because they are messy eaters.
- They will redecorate your sandbed hunting for food, so use a deeper sand area and keep loose frags and lightweight rocks glued down or they will get flipped.
- Feed like a predator: chunky marine meaty foods (shrimp, squid, clam, mussel, krill) plus quality pellets, 1-2 times daily; soak in vitamins now and then to head off HLLE-type issues.
- Skip tiny tankmates - anything small enough to fit in its mouth will eventually vanish; pair with other robust, similarly sized temperate fish and avoid timid species that hate being pushed off food.
- Watch the mouth and fins for damage if housed with aggressive brawlers - they are tough but they do a lot of face-first foraging and can get infections fast if water gets dirty.
- Breeding at home is basically a public-aquarium project: they are seasonal spawners and can change sex, so you would need a group, a huge system, and stable seasonal temp/light cycles to have a shot.
Compatibility
Good Tankmates
- Other medium-large Mediterranean style fish that can take a little attitude - think wrasses (Coris or similar hardy wrasses). They are quick, confident, and usually dont get bullied at feeding time.
- Tougher damselfish and chromis (especially larger Chromis) if the tank has lots of rockwork and you add the damsels first. Theyre scrappy enough to not get pushed around, but still keep an eye on territory.
- Rabbitfish (Siganus spp.) - big, calm algae munchers that dont act like prey and generally dont start drama. In my experience they just ignore seabream posturing.
- Bristletooth tangs (like Kole tang) or other similarly sized tangs in a roomy tank - theyre fast, not easily intimidated, and they hold their own without being finicky.
- Smaller groupers or hawkfish that are too big to swallow and not super shy (size matters here). The seabream is semi-aggressive, but it usually respects chunky tank mates that stand their ground.
- Larger, non-nippy bottom hangers like a sturdy goatfish - they share the general vibe (foraging, bold), and neither tends to be a delicate target.
Avoid
- Tiny fish and shrimp-sized snacks - things like small gobies, tiny blennies, and cleaner shrimp can turn into an expensive feeding response. Redbanded seabream are hunters when the opportunity is there.
- Slow, peaceful, long-finned fish that cant compete at meals - fancy butterflyfish, timid bannerfish, or anything that freezes up when chased. The seabream will harass them and outcompete them for food.
- Super aggressive bruisers that crank the stress up - big triggerfish or nasty large wrasses. You end up with constant posturing and torn fins, especially once territories lock in.
Where they come from
Redbanded seabream (Pagrus auriga) are a Mediterranean and nearby eastern Atlantic fish - think rocky reefs, sandy patches, and deeper ledges where they cruise and pick up crabs, worms, and small fish. Most of the ones you see in the trade are wild-caught, and they act like it: tough, aware, and not big on being pushed around.
These are not "reef cute" community fish. They're more like a marine pond predator that happens to fit in a big glass box if you build the tank around them.
Setting up their tank
Give them room and stability. Adults get chunky, fast, and they swim like they mean it. I'd treat 180 gallons as a realistic starting point for one, and bigger is better if you want tankmates. They appreciate open water to cruise, plus rockwork they can duck behind when they decide you are suspicious.
They are messy eaters and heavy breathers, so build the system like a fish-only predator setup even if you plan to keep some hardy inverts. Big skimmer, lots of biological capacity, and strong flow that keeps waste moving to the overflow. I like a bare-bottom or very thin sand bed because they can redecorate and you will be vacuuming a lot.
- Tank size: 180g minimum for an adult, 240g+ if you want multiple big fish
- Rockwork: stable, low and wide, with caves and sight breaks (zip-tie or epoxy anything that can shift)
- Filtration: oversized skimmer, good mechanical filtration you can change often, lots of bio media/live rock
- Flow: enough to keep detritus suspended, but leave a couple calmer zones
- Lid: tight-fitting - startled seabream can launch
Don't gamble on a new tank. They handle "normal" nitrate better than delicate reef fish, but they react badly to swings: salinity wobble, oxygen dips, or an ammonia hiccup will show up fast as heavy breathing and refusal to eat.
What to feed them
They eat like a sparid: meaty, enthusiastic, and always hunting. Mine did best on a rotating menu of marine-based foods. Start with frozen if they are shy, then work in quality pellets once they're settled. If you can get them taking pellets, your life gets easier and their nutrition stays more consistent.
Aim for smaller portions more often instead of one giant feeding. They will beg like a puppy, but if you overdo it you will be cleaning a lot of brown foam and wondering why your nitrates climbed.
- Staples: chopped shrimp, squid, clam, mussel, scallop (marine, not freshwater feeder fish)
- Frozen mixes: good marine carnivore blends with varied particle size
- Pellets: sinking marine carnivore pellets once trained
- Treats: live blackworms (if you can source clean), small live marine shrimp occasionally
- Supplements: vitamin soak 1-2x per week if the fish came in skinny or stressed
If a new one won't eat, try half-shell clam or mussel. The smell gets a response, and the shell keeps it from blowing around the tank.
How they behave and who they get along with
They are bold once settled, but not "friendly" in the reef fish sense. Expect a smart predator that learns your routine, recognizes the feeding stick, and tests boundaries. They can be pushy at the dinner table and will absolutely eat anything that fits in their mouth.
Tankmates need to be robust and not snack-sized. You want fish that can handle a blunt, fast fish barging in at feeding time. They are usually fine with other big fish if the tank is large and there are sight breaks, but two similar seabream or close cousins can turn into a dominance issue.
- Good candidates: large tangs, robust angels, big wrasses, triggers with compatible temperament, sizable groupers in very large systems
- Avoid: small wrasses, gobies/blennies, anthias, small clowns, decorative shrimp, most crabs
- Inverts: snails often get ignored until one gets flipped; shrimp are usually food
- Corals: they are not a "reef-safe" bet - they may nip, and their feeding mess irritates corals anyway
Mixing aggressive feeders can go sideways fast. Use multiple feeding stations or a feeding tube, and watch for one fish taking all the food while the seabream gets frustrated (or vice versa).
Breeding tips
Realistically, breeding Redbanded seabream in home aquariums is a long shot. They are broadcast spawners in the wild and need space, seasonal cues, and usually a group dynamic. Many sparids can change sex, and social structure matters, so a random pair in a glass box rarely does the thing.
If you ever want to try, think public-aquarium scale: a large group, very large system, heavy feeding, and gradual seasonal temperature and photoperiod shifts. Even if you get eggs, raising tiny pelagic larvae is its own full-time project.
A "breeding project" here usually means building a system for the fish first, then being pleasantly surprised if they spawn, not buying them expecting babies.
Common problems to watch for
Most problems I have seen come from three things: rough collection/shipping, not enough oxygen and filtration, and new-fish disease introduced without quarantine. They are hardy once established, but the first month is where you lose them if anything is off.
- Refusing food: common right after import; try shellfish, dim lighting, and reduce competition
- Ich/velvet: very possible with wild-caught marine fish; quarantine and observation save headaches
- Bacterial infections after shipping: frayed fins, red sores, cloudy eyes; act early and keep water clean
- Head and lateral line erosion: often tied to long-term nutrition and water quality; varied diet helps
- Jaw damage: they hit rock/glass when startled; stable aquascape and a calm room help
If you see heavy breathing, hanging at the surface, or rapid gill movement, treat it like an emergency. Check oxygen, temperature, ammonia, and salinity right away before you start throwing meds at the tank.
If you can keep the water stable, feed a varied marine diet, and give them enough space, they're a seriously cool fish to own. Just go into it knowing you're basically keeping a small, muscular predator - and the tank needs to match that reality.
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