Shortjaw goatfish
Upeneus brevignathus
The Shortjaw goatfish features a distinctive, robust body with bright yellow to pink tones and prominent barbels on its chin.
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About the Shortjaw goatfish
Upeneus brevignathus is a marine goatfish (family Mullidae) described in 2024 and currently known from the NW Indian Ocean (off SE Yemen). Like other goatfishes it has chin barbels used to locate benthic prey; captive suitability is not specifically documented for this species and would be inferred from general goatfish husbandry.
Quick Facts
Size
9.5 cm SL
Temperament
Peaceful
Difficulty
Expert
Min Tank Size
75 gallons
Lifespan
3-6 years
Origin
Western Indian Ocean
Diet
Carnivore - small benthic invertebrates (worms, small crustaceans), frozen meaty foods
Water Parameters
24-28°C
8-8.4
8-12 dGH
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Calculate heater sizeCare Notes
- Provide ample open-bottom area and a fine sand substrate, as goatfishes use chin barbels to probe for food in/over sand; species-specific captive space requirements are not well documented for Upeneus brevignathus.
- Use fine sand, not crushed coral; they sift constantly and will scrape up their barbels on sharp substrate, then you are dealing with infections.
- Keep marine parameters steady: 1.025-1.026 SG, 24-26 C (75-79 F), pH 8.1-8.4, and keep nitrate low (under ~10-20 ppm) because they do worse long-term in dirty water.
- Feed like a bottom hunter: small meaty stuff (mysis, chopped shrimp, clam, squid, enriched brine) 2-3 times a day, and target feed so faster fish do not steal everything.
- Expect it to eat your cleanup crew - small snails, tiny crabs, and especially shrimp are snacks; bigger turbo snails sometimes survive but do not bet on it.
- Tankmates: stick with robust, non-bully fish that will not outcompete it at feeding (bigger wrasses, tangs, rabbitfish are usually fine); avoid aggressive triggers and big groupers that will harass or swallow it.
- Watch for barbel erosion, mouth damage, and sudden weight loss from internal parasites; I quarantine and deworm proactively because wild-caught goatfish are parasite magnets.
- Breeding in home tanks is basically a non-event - they are pelagic spawners and the larvae are tiny and tough, so plan on enjoying it as a display/behavior fish, not a breeding project.
Compatibility
Good Tankmates
- Peaceful community fishes that do not harass bottom-roaming fish and do not outcompete them at feeding (species-specific compatibility for Upeneus brevignathus is not documented).
- Peaceful clownfish (Ocellaris or Percula) that stick to their corner - the shortjaw goatfish mostly minds its own business on the sand and wont bother them
- Chill dartfish and firefish (Nemateleotris) in a covered tank - they hover up top, goatfish stays down low, so they dont get in each others business
- Smaller, non-pushy tangs and rabbitfish in a big enough tank (like a Kole tang or a one-spot foxface) - good as long as theres swimming room and nobody is food-aggressive
- Peaceful reef gobies that perch or guard a small patch (clown gobies, neon gobies, some watchman gobies) - generally fine if they are not tiny snack-sized and you have enough sand space
- Calm midwater plankton pickers like chromis or anthias - they hang in the water column, goatfish sifts the sand, and they can all coexist if you feed regularly
Avoid
- Big bullies and fin-nippers like triggerfish and most larger dottybacks - they tend to harass anything that cruises the bottom and can make a goatfish stop coming out
- Aggressive territorial angels (especially larger Pomacanthus) - they can turn the whole tank into their turf and will shove the goatfish off food every time
- Mean damsels and similar scrappy fish (sergeant majors, domino damsels) - they dont care that the goatfish is peaceful and will still pick fights
- Predatory ambush types and toothy hunters like groupers and large lionfish - if it can fit the goatfish in its mouth, it eventually will
Where they come from
Shortjaw goatfish (Upeneus brevignathus) are Indo-Pacific reef fish you will usually see over sand and rubble near reefs. They spend their day cruising and "mowing the lawn" with those barbels, sifting sand for tiny critters. If you are expecting a rock-perching show fish, this is the opposite - they are working the bottom constantly.
Those chin barbels are not decoration. They are sensory organs, and the fish uses them all day. A tank that does not let them forage naturally tends to end in a stressed, skinny goatfish.
Setting up their tank
This is an expert fish mostly because of space, feeding needs, and how fast they go downhill if they are not eating. I would not try one in anything under 125 gallons, and bigger is honestly better once they start putting on size and confidence.
- Tank size: 125 gallons minimum, 180+ is more comfortable long term
- Footprint matters more than height - they cruise and turn a lot
- Open sand flats with rockwork pushed back or to the sides
- Tight lid - they can spook and launch
Give them a real sand bed. Not crushed coral, not bare bottom. Fine aragonite sand lets them sift without scraping their mouth or barbels. I like 2-3 inches so they can really dig and blow it around.
Avoid sharp substrate. I have seen goatfish wear their barbels down and end up with infections after weeks on coarse gravel or crushed coral.
Flow should keep detritus from settling, but do not blast the sand into dunes 24/7. Think moderate reef flow with some calmer lanes along the bottom where they can work. Rockwork needs to be stable because they will bump and shovel sand under things.
- Salinity: 1.025-1.026
- Temperature: 75-79 F
- Stable pH and alkalinity - swings show up fast as stress and appetite loss
- Strong filtration and a skimmer - they are messy eaters
What to feed them
They are carnivores that want small meaty foods, and they burn calories all day. The biggest mistake I see is feeding like you would a tang or even a wrasse - once a day and calling it good. A goatfish that is not getting enough just turns into a thin triangle.
- Best staples: chopped shrimp, clam, squid, scallop, krill (not as the only food)
- Frozen blends with lots of small bits: mysis, calanus, finely chopped "reef" mixes
- Pellets can work, but do not count on them at first - train them slowly
- Feed 2-3 smaller meals per day if you can
New arrivals can be shy for the first few days, then suddenly turn into pigs. I like to start with thawed mysis and finely chopped clam. If they are hesitant, I use a feeding stick and place food near the sand right in front of them. Once they associate you with food, they usually get bold.
Watch the belly line, not just "did it eat." A healthy goatfish should look filled out behind the head. If the back half looks pinched even though it grabs a few bites, increase frequency and use more calorie-dense foods like clam and squid.
How they behave and who they get along with
Shortjaw goatfish are busy, nosy bottom cruisers. They will redecorate your sand, blow it onto low corals, and they will absolutely eat tiny inverts. Their vibe is generally peaceful toward similar-sized fish, but they are predators with a mouth big enough for "maybe."
- Good tankmates: medium to large community marine fish that are not bullies (bigger wrasses, rabbitfish, tangs, angels with similar temperament)
- Avoid: tiny gobies, small blennies, small shrimp, micro hermits, tiny crabs
- Caution with aggressive feeders (big triggers, large dottybacks) - goatfish can get outcompeted
- Not great for pristine SPS-on-the-sand setups - they kick up sand
Do not expect to keep ornamental shrimp with this fish long term. Even if it ignores them at first, once it settles in and starts hunting, shrimp become expensive snacks.
They can be kept with other goatfish in big systems, but in typical home tanks I would do one. Mixing similar bottom-foraging species can turn into constant pacing and food competition.
Breeding tips
Breeding in home aquariums is basically a non-topic. Goatfish are pelagic spawners in the wild, and even if you managed to get a pair to spawn, raising the larvae is a whole different level of plankton culture and larval rearing. I would treat this species as display-only for breeding plans.
Common problems to watch for
- Starvation and slow weight loss from underfeeding or being outcompeted
- Barbel and mouth injuries from rough substrate or unstable rock
- Ich/velvet sensitivity during shipping stress - they often arrive beat up
- Jumping when startled, especially right after lights out
- Sandstorms covering corals and clogging intakes if flow and rock placement are off
The number one killer is just not getting enough food into them consistently. They can look "fine" for a couple weeks while they burn through reserves, then they crash fast. If you are gone a lot and cannot feed at least twice a day, I would honestly pick a different fish.
If a goatfish stops eating for more than a day or two, treat it like an emergency. Check for bullying, test water, and consider moving it to a quiet QT with easy feeding. They do not have the same "coast for a week" buffer some other marine fish have.
Also keep an eye on the barbels. They should look even and intact. If they look frayed or shortened, fix the substrate issue and keep water clean. Minor damage can heal, but once infection sets in, it is a rough road.
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