Freshwater puffer types: pea puffers and mbu compared

Pea puffer (Carinotetraodon travancoricus), left-facing adult AI illustration

Pea pufferSmall; source reports approximately 2–3 cm, measurement basis unspecifiedA blotched dwarf puffer with demanding feeding and territorial behaviour

Bornean redeye puffer (Carinotetraodon borneensis), left-facing adult AI illustration

Bornean redeye pufferImporter males around 6 cm and females around 4 cm; basis unspecifiedA pale male side stripe and red belly, with a grey-black rather than red tail

Imitator dwarf puffer (Carinotetraodon imitator), left-facing adult AI illustration

Imitator dwarf pufferType material approximately 19–26.5 mm SLFemale freckles between larger blotches resemble a pea puffer

Red-tailed redeye puffer (Carinotetraodon irrubesco), left-facing adult AI illustration

Red-tailed redeye pufferMale approximately 5 cm in importer account; basis unspecifiedA red-tailed male with a pale side stripe and changeable colour

Redeye puffer (Carinotetraodon lorteti), left-facing adult AI illustration

Redeye pufferProfile 60 mm SL; not sprite TLMale red median fins, a grey-black tail and an unbarred throat

Striped redeye puffer (Carinotetraodon salivator), left-facing adult AI illustration

Striped redeye pufferProfile 50 mm SL; not sprite TLHead and body bars, a pale lower lip and a red male underside

Ocellated puffer (Leiodon cutcutia), left-facing adult AI illustration

Ocellated pufferImporter maximum 9 cm; another source 10–15 cm, bases unspecifiedGolden-olive mottling and a black flank ocellus; colour can change

Hairy puffer (Pao baileyi), left-facing adult AI illustration

Hairy pufferImporter maximum approximately 12–15 cm, basis unspecifiedShort skin cirri and mottled camouflage create a stone-like ambush fish

Humpback puffer (Pao palembangensis), left-facing adult AI illustration

Humpback pufferImporter usually around 12–15 cm, with larger recordsA humped back and marbled belly; not the brackish figure-eight puffer

Arrowhead puffer (Pao suvattii), left-facing adult AI illustration

Arrowhead pufferImporter approximately 12–15 cm; basis unspecifiedAn upturned mouth and dorsal arrow mark belong to a sand-hiding predator

Amazon puffer (Sphoeroides asellus), left-facing natural adult AI illustration

Amazon pufferImporter usually 6–8 cm, maximum around 12 cm, basis unspecifiedGolden dorsal bands and a white belly on an active swimmer

Fahaka puffer (Tetraodon lineatus), left-facing adult AI illustration

Fahaka pufferLarge; importer maximum slightly above 40 cm, basis unspecifiedGolden longitudinal stripes, substantial adult space and a powerful bite

Mbu puffer (Tetraodon mbu), left-facing adult AI illustration

Mbu pufferLarge; sources report roughly 67–75 cm maxima with conflicting measurement basesFine maze markings and a long body demand adult housing planned in advance

Congo puffer (Tetraodon miurus), left-facing adult AI illustration

Congo pufferImporter maximum approximately 15 cm, basis unspecifiedHigh eyes and an upturned mouth; red is a changeable appearance, not another species

Cross River puffer (Tetraodon pustulatus), left-facing adult AI illustration

Cross River pufferImporter 36 cm, basis unspecified; profiles 300 and 400 mm SLLarge and orange-spotted; not a colour strain of the Mbu puffer

Spotted Congo puffer (Tetraodon schoutedeni), left-facing adult AI illustration

Spotted Congo pufferImporter adult account 7–10 cm; SL/TL unspecifiedSeparate dark spots on gold-brown flanks; relative calm still varies by individual

Freshwater puffer types: pea puffers and mbu compared

Confirm identity and water type first

The pea puffer is Carinotetraodon travancoricus; the mbu puffer is Tetraodon mbu. Both referenced profiles describe freshwater species. A different puffer trade name does not establish the same water requirements. Resolve the scientific identity before deciding how to prepare the water; leave uncertain names unresolved rather than borrowing care from a familiar species.

Juvenile photographs hide adult scale

The pea puffer is a small species; the mbu becomes a large fish. Similar-sized photographs do not make their adult space requirements comparable. Check the measurement, life stage and basis of the size information in each profile. An image width is not a biological measurement, and a missing value should not be estimated from a similar-looking fish.

Appearance is only part of the choice

Cover and broken sightlines matter for pea puffers, as do fin-nipping and competition for food. Small size does not remove behavioural needs. The mbu profile describes a diet including shellfish. Assess reliable feeding species by species rather than treating snail-eating as a job description for the whole gallery or assuming all will accept the same prepared food.

Choose the next profile to read

For the small pea puffer, start with behaviour and environment. For the mbu, start with adult space and feeding. This helps you narrow the candidates before choosing by appearance. Inclusion in the gallery is not a small-aquarium recommendation. The virtual aquarium records a visual arrangement, not a verified stocking or compatibility plan.

Sources

Freshwater puffers

Freshwater puffer types: pea puffers and mbu compared

Confirm identity and water type first

Juvenile photographs hide adult scale

Appearance is only part of the choice

Choose the next profile to read