Goiás pleco
Hypostomus goyazensis
The Goiás pleco features a robust body with dark brown to black coloration and distinctive light-colored spots and markings.
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About the Goiás pleco
Hypostomus goyazensis is one of those classic armored suckermouth catfish that acts like a little bulldozer on the bottom, wedging into wood and under rocks all day. It is a river fish from Brazil and it can get to about 10 inches, so it is not a cute forever-baby pleco. Give it real floor space, good filtration, and lots of driftwood and it will settle in and do its thing.
Also known as
Quick Facts
Size
26 cm (10.2 inches) TL
Temperament
Semi-aggressive
Difficulty
Intermediate
Min Tank Size
75 gallons
Lifespan
10-15 years
Origin
South America
Diet
Omnivore with heavy grazing - sinking wafers/pellets, veggies, driftwood biofilm, frozen foods occasionally
Water Parameters
23-28°C
6-7.5
2-15 dGH
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Calculate heater sizeCare Notes
- Plan for a big tank - a grown Goias pleco is a chunky Hypostomus, and they get pushy in cramped setups. Think 75g minimum for one adult, bigger if you want tankmates that can actually have space too.
- Give it real cover: driftwood to wedge under, a couple rock or slate caves, and decent flow with lots of oxygen. Smooth sand or rounded gravel helps keep the belly and fins from getting scraped up.
- They do fine around neutral water, but they hate dirty water - keep ammonia/nitrite at 0 and nitrates low with big weekly water changes. Temp in the mid-70s F (24-26 C) is a solid target, and they handle moderate hardness fine.
- Feeding: don’t rely on algae - it won’t keep them fed. Rotate sinking wafers, veggies (zucchini, cucumber, green beans), and some protein like shrimp pellets or frozen foods 1-2 times a week so they keep weight without getting bloated.
- Wood matters with these guys - I always keep driftwood in the tank because they rasp on it constantly. It also gives them something to do so they are less likely to bulldoze plants and decor.
- Tankmates: pick sturdy, mid-to-upper water fish that won’t bother it, and avoid other big plecos unless the tank is huge. Slow bottom fish (loaches, small cats) can get crowded out at feeding time, and long-finned fish can get harassed at night.
- Watch for the classic pleco problems: getting too fat from constant high-protein feeding, and torn fins/bellies from sharp decor. Also, if it starts sucking on tankmates (rare but happens), bump up feeding and add more wood/hides.
Compatibility
Good Tankmates
- Medium-to-large, sturdy midwater fish like silver dollars or larger tetras (think big, fast schooling types) - they mind their business and are quick enough to stay out of the pleco's personal space
- Tough Central/South American cichlids that are not total psychos - severums, acara, keyholes - they can handle the pleco's grumpy moments and usually ignore each other if the tank is big
- Bigger barbs and rainbows (tinfoil barbs, some rainbowfish) - active, not easily bullied, and they do not sit on the bottom where the Goiás pleco wants to park
- Other robust catfish that keep to themselves like larger Synodontis (in a roomy tank with multiple caves) - different vibe, less direct competition if you give lots of hiding spots
- Fast, torpedo-shaped fish like giant danios (in big tanks) - they stay up top, eat quick, and do not mess with the pleco when it is wedged under driftwood
- Bigger peaceful gouramis (like a three-spot/opaline type) in a calm setup - they hang mid-to-top and usually do fine as long as they are not slow and frilly
Avoid
- Other plecos and similar bottom hogs (common pleco types, sailfins, even bristlenoses in tight quarters) - territory wars over caves and driftwood are a real thing, especially as they size up
- Small, delicate bottom fish like Corydoras and little loaches - they want the same floor space and can get stressed or bullied off food when the Hypostomus starts throwing its weight around
- Slow fish with fancy fins (angelfish, long-fin livebearers, bettas) - not because the pleco 'hunts' them, but nighttime rasping and bumping happens and the slow ones take the damage
- Anything super aggressive or nippy like jaguar cichlids, red devils, or big bitey barbs - they will harass the pleco, chew fins, and turn the whole tank into a wrestling match
Where they come from
The Goias pleco (Hypostomus goyazensis) comes from central Brazil, in the Goias region. Think warm rivers and streams with a mix of sand, rock, and sun-baked driftwood, plus seasonal changes where water levels and flow can swing a lot.
In the hobby they get lumped in with a lot of similar Hypostomus, so if yours was sold as just a "common pleco," pay attention to adult size and attitude rather than the label.
Setting up their tank
Give this fish room. A young one looks manageable, then a year later you are wondering why your filter is working overtime. I would treat them like a big-bodied river pleco: lots of floor space, strong filtration, and a layout that lets them claim a cave without owning the whole tank.
- Tank size: bigger than you think. I would not plan on keeping an adult in anything under 75 gallons, and 125+ is a lot more comfortable if it turns out to be a real bruiser.
- Footprint matters more than height. Long tanks beat tall tanks.
- Substrate: sand or smooth gravel. They like to bulldoze and you do not want torn barbels.
- Hardscape: driftwood plus a couple of rock piles or ceramic caves so they can wedge in and feel secure.
- Flow and oxygen: moderate to strong flow with good surface agitation. They handle warmth fine but hate stale water.
- Water: typical tropical freshwater works. Aim for stable, clean water over chasing exact numbers.
If you use real driftwood, expect it to get rasped. This is normal. I keep a backup piece soaking so I can swap when one gets too chewed up or starts looking rough.
They are messy eaters and produce a lot of waste. If your filtration is only sized for the other fish, you will be fighting nitrate and mulm constantly.
What to feed them
They will eat algae, but they are not an "algae solution." A well-fed Hypostomus is basically an omnivore with a strong veggie lean, and they do best when you feed like it.
- Staples: sinking wafers or pellets made for plecos/catfish (I rotate brands so they do not get picky).
- Veggies: zucchini, cucumber, green beans, spinach, romaine, and sweet potato. Blanch the tougher stuff so it sinks.
- Protein: occasional treats like shrimp pellets, frozen bloodworms, or chopped prawn. I keep protein as a side dish, not the main course.
- Wood: they spend a lot of time rasping it. It seems to help digestion and keeps them busy.
Feed after lights-out if your pleco is shy or the tankmates are pigs. I use a simple routine: drop wafers in one corner, veggies clipped on the opposite side, so the pleco can pick a spot and settle in.
Do not leave veggies in for days. Pull leftovers the next morning. Rotting zucchini will nuke water quality fast.
How they behave and who they get along with
Most of the time they are chill, especially during the day. At night they cruise, redecorate, and sometimes decide a favorite cave is worth arguing over. The bigger they get, the more their "personal space" matters.
- Temperament: generally peaceful, but can be pushy with other bottom fish, especially other plecos.
- Territory: expects a cave or nook. Give more than one hiding spot so nobody has to fight for it.
- Tankmates: sturdy midwater fish do well (bigger tetras, barbs, rainbows, many cichlids that are not hyper-aggressive).
- Avoid: tiny delicate fish that sleep on the bottom, slow fancy fish that get stressed by nighttime bulldozing, and other large plecos in cramped tanks.
If you see lip-locking or shoving between plecos, it is usually a space issue. More hides and a bigger footprint fix most of it.
Breeding tips
Breeding Hypostomus in home aquariums is possible, but it is not like breeding bristlenose where it just happens in a spare cave. They tend to want space, heavy feeding, and a setup that mimics seasonal changes.
- Group vs pair: a small group of juveniles and letting a pair form works better than buying two random adults.
- Caves: use deep, snug caves or lengths of pipe where a male can block the entrance.
- Triggers: big water changes with slightly cooler water and a bump in flow can help mimic rainy season.
- Feeding: condition them with lots of veg plus quality pellets; add protein a couple times a week while conditioning.
If you get fry, have a plan. These are not nano plecos. Grow-out space and a destination for the youngsters matters.
Common problems to watch for
Most issues with this fish come down to two things: water quality and underestimating adult size. Fix those and they are usually hardy.
- Nitrate creep and mulm buildup: they eat a lot and poop a lot. Vacuum the bottom, clean filters on a schedule, and do regular water changes.
- Scraped belly and torn fins: happens with sharp rock, rough gravel, or tight decor they try to wedge under. Smooth the layout.
- Sunken belly or pinched look: often not enough food, or food getting stolen by tankmates. Feed after dark and use sinking foods.
- Bloat/constipation: too much protein, not enough fiber. Add more veg and wood access, back off heavy meaty foods.
- Ich and stress spots after big changes: they dislike sudden swings. Match temperature, dechlorinate, and avoid huge parameter jumps.
- Random "aggression" spikes: usually a cave dispute. Add hides and break lines of sight.
If your pleco starts gulping at the surface or hanging near the filter output, treat it like an oxygen problem first. Add surface agitation, check temperature, and test for ammonia and nitrite right away.
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