A heavily armored, highly adaptable catfish native to South America. It possesses the unique ability to breathe atmospheric air using a modified intestine, allowing it to survive in oxygen-depleted swamps. They are peaceful but boisterous bottom-dwellers with voracious appetites. They constantly forage, which can result in the uprooting of delicate plants.
Brown Hoplo Catfish At a Glance
Brown Hoplo Catfish Tank Requirements
Will Brown Hoplo Catfish fit in your tank?
Care guides tell you what Brown Hoplo Catfish needs, the next question is whether your tank can safely provide it. Test Brown Hoplo Catfish against your tank size, maintenance needs, and the fish you already keep before you buy.
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Brown Hoplo Catfish Water Parameters
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Brown Hoplo Catfish Temperament & Compatibility
Brown Hoplo Catfish Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Adult (Standard)
The mature adult form. Requires a spacious tank with a large footprint due to its active foraging nature and large adult size.
Same care requirements as the base species
Also known as: Full Grown, Adult
Juvenile (Grow-out)
Young specimens commonly sold in pet stores. They are extremely greedy eaters and grow rapidly. A smaller grow-out tank can be used temporarily, but an upgrade will be needed within months.
Differs in 3 traits from base species
Also known as: Baby, Juvenile
Brown Hoplo Catfish Care Guide Summary
The Brown Hoplo Catfish, scientifically known as Hoplosternum littorale, belongs to the Catfish family group. Adults reach a maximum size of approximately 22 cm and have a depressed body shape with a fast growth rate. Classified as peaceful, this species primarily occupies the bottom and mid-level zones of the aquarium and produces a high level of biological waste.
To thrive, the Brown Hoplo Catfish requires a freshwater only aquarium with a minimum volume of 200 litres and a tank length of at least 120 cm. Water temperature should be maintained between 18°C and 28°C, with a pH range of 6–8 and a general hardness of 4–20 dGH. A low water flow is preferred.
The Brown Hoplo Catfish is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Adult (Standard) and Juvenile (Grow-out). Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Brown Hoplo Catfish Habitat Setup
When setting up an aquarium for the Brown Hoplo Catfish, a low water flow best suits their natural preferences. Because this species occupies the bottom and mid-level zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour and smooth gravel or rounded substrate to protect their sensitive barbels. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper, expect substrate disturbance, so lightweight décor should be secured, and live planted layouts may be difficult to maintain, as this species tends to uproot or consume vegetation.
Brown Hoplo Catfish Compatibility Notes
Classified as peaceful, the Brown Hoplo Catfish is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the bottom and mid-level zones can help reduce competition and territorial overlap.
Brown Hoplo Catfish Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Brown Hoplo Catfish.
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
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Frequently Asked Questions About Brown Hoplo Catfish
How big does Brown Hoplo Catfish get?
Brown Hoplo Catfish (Hoplosternum littorale) typically reaches a maximum adult size of approximately 22 cm. They have a depressed body shape and a fast growth rate.
What tank size does Brown Hoplo Catfish need?
A minimum aquarium volume of 200 litres and a tank length of at least 120 cm are recommended for Brown Hoplo Catfish. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Brown Hoplo Catfish need?
Brown Hoplo Catfish thrives in freshwater only conditions with a temperature range of 18–28°C, a pH between 6 and 8, and a general hardness of 4–20 dGH. A low water flow is preferred.
Is Brown Hoplo Catfish peaceful or aggressive?
Brown Hoplo Catfish is classified as peaceful with an aggression score of 2 out of 10. They are generally well-suited to peaceful community tanks.
Can Brown Hoplo Catfish live alone?
Yes, Brown Hoplo Catfish can be kept singly or in a group. They are flexible and adapt well to both setups.
Does Brown Hoplo Catfish have any special tank requirements?
Yes. Brown Hoplo Catfish benefits from sand (sifters) and smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Brown Hoplo Catfish need a lid on the tank?
Yes. Brown Hoplo Catfish is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
Top Tank Mates for Brown Hoplo Catfish
These fish are strong compatibility matches for Brown Hoplo Catfish based on water preferences, temperament, adult size, and tank behavior.
Celebes Halfbeak
Nomorhamphus liemi
Ideal Tank MatesWrestling Halfbeak
Dermogenys pusilla
Ideal Tank MatesOrange Delight Shrimp
Caridina loehae
Ideal Tank MatesGold Spot Pleco (L001 / L022)
Pterygoplichthys joselimaianus
Ideal Tank MatesMurray River Rainbowfish
Melanotaenia fluviatilis
Ideal Tank MatesMadagascar Rainbowfish
Bedotia madagascariensis
Ideal Tank MatesPlants That Suit Brown Hoplo Catfish
These plants pair well with Brown Hoplo Catfish based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Asian Watergrass
Hygroryza aristata
Asian Watermoss
Salvinia cucullata
Floating Fern
Salvinia natans
Giant Salvinia
Salvinia molesta
Meebold's Lagenandra
Lagenandra meeboldii
Sweet Potato
Ipomoea batatas
Fish Similar to Brown Hoplo Catfish
Black Marble Hoplo
Megalechis thoracata
The Black Marble Hoplo is a hardy, active armored catfish from South America. Known for its generally peaceful nature and adaptability, it's an excellent scavenger. Uniquely among catfish, they can breathe atmospheric air from the surface and males are bubble-nesters.
Striped Raphael Catfish
Platydoras armatulus
A highly robust, armored catfish native to the Amazon and Orinoco basins. Famous for their ability to produce audible squeaking or grunting sounds when distressed or defending territory. They are nocturnal scavengers that spend most of the day hiding in driftwood or caves. Note: Their rigid pectoral spines can easily become tangled in standard aquarium nets.
Brown Bullhead Catfish
Ameiurus nebulosus
A highly adaptable, large North American catfish known for its distinct barbels and mottled brown skin. While incredibly hardy and tolerant of a wide range of water parameters, they are massive, opportunistic nocturnal predators. They will consume any tank mate small enough to fit in their cavernous mouths and produce substantial waste.
Agassiz Cory
Corydoras agassizii
A peaceful, bottom-dwelling armored catfish native to the Amazon River basin. They are easily identified by their silvery body with dark spots and a distinct black mask over their eyes. Like all Corydoras, they are highly social and must be kept in groups. A soft sand substrate is absolutely essential to protect their delicate sensory barbels as they forage.
Brown Puffer
Pao turgidus
A heavily built, strictly freshwater pufferfish native to the Mekong basin in Southeast Asia. Often sold as part of the 'Target Puffer' complex, the Brown Puffer is a notorious ambush predator. They spend much of their time lurking among plants or partially buried in the substrate waiting for prey. They are highly aggressive, strictly solitary, and possess a sharp beak capable of crushing snails and fatally injuring tank mates.
Frogmouth Catfish
Chaca chaca
An incredibly bizarre ambush predator native to South Asia. With a massive, flat head and cryptic coloration, they perfectly mimic a dead leaf or piece of wood. They are entirely sedentary, moving only to gulp down prey that wanders too close to their cavernous mouths. Because they can easily consume fish up to half their own length, tank mates must be chosen with extreme caution.