Corydoras Duplicareus tank mates
Corydoras duplicareus
6 rated pairings from the Corydoras Duplicareus care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. Corydoras Duplicareus needs at least 15 gallons on its own; every companion adds to that.
Excellent matches
3 · Same water, complementary zones, no conflict.
Otocinclus
Otocinclus vittatus
10 gal min · 1.5" adult · Peaceful
Similar size, peaceful temperament, and preference for soft acidic water make them ideal companions
Emerald Dwarf Rasbora
Danio erythromicron
10 gal min · 1" adult · Peaceful
Small, peaceful mid-water swimmer that shares preference for soft, acidic blackwater conditions
Panda Tetra
Aphyocharax paraguayensis
10 gal min · 1.5" adult · Peaceful
Small, peaceful tetra that thrives in soft, acidic water and won't compete with bottom-dwelling corydoras
Good matches
3 · Compatible with normal care — watch space and numbers.
German Blue Ram
Mikrogeophagus ramirezi
20 gal min · 3" adult · Peaceful
Peaceful dwarf cichlid with compatible temperature and water chemistry requirements
Red Cherry Shrimp
Neocaridina davidi
5 gal min · 1.2" adult · Peaceful
Peaceful invertebrate that shares similar water parameters; avoid very large shrimp that may compete for food
Blind Cave Tetra
Astyanax mexicanus
20 gal min · 3.5" adult · Peaceful
Peaceful schooling fish adapted to low-light conditions similar to blackwater environments
Also recommended alongside Corydoras Duplicareus
Species whose own guides list Corydoras Duplicareus as a tank mate.
Nerite Snail
Neritina natalensis
5 gal min · 1" adult · Peaceful
Ramshorn Snail
Planorbarius corneus
5 gal min · 0.75" adult · Peaceful
Fancy Guppy
Poecilia reticulata
10 gal min · 2" adult · Peaceful
Bacopa Caroliniana
Bacopa caroliniana
Ghost Shrimp
Palaemonetes paludosus
5 gal min · 1.5" adult · Peaceful
Brazilian Pennywort
Hydrocotyle leucocephala
Hygrophila Polysperma
Hygrophila polysperma
Red Racer Nerite Snail
Vittina waigiensis
5 gal min · 1" adult · Peaceful
Double Tail Betta
Betta splendens 'Double Tail'
5 gal min · 2.5" adult · Semi-aggressive
Limnophila Sessiliflora
Limnophila sessiliflora
Little Whirlpool Ramshorn Snail
Anisus vorticulus
5 gal min · 0.35" adult · Peaceful
Elephant Ear Betta
Betta splendens 'Dumbo'
5 gal min · 2.5" adult · Semi-aggressive
Florida Flagfish
Jordanella floridae
15 gal min · 2.5" adult · Semi-aggressive
GloFish Danio
Danio rerio
10 gal min · 2" adult · Peaceful
African Glass Catfish
Pareutropius debauwi
20 gal min · 3.5" adult · Peaceful
Amazon Leaf Fish
Monocirrhus polyacanthus
20 gal min · 3.5" adult · Peaceful
Amazon Molly
Poecilia formosa
10 gal min · 2.5" adult · Peaceful
Anubias Hastifolia
Anubias hastifolia
Aponogeton Longiplumulosus
Aponogeton longiplumulosus
Black Devil Snail
Faunus ater
20 gal min · 2" adult · Semi-aggressive
Black Ruby Barb
Pethia nigrofasciata
20 gal min · 1.6" adult · Semi-aggressive
Blue Wag Platy
Xiphophorus maculatus
10 gal min · 2.5" adult · Peaceful
Blueberry Snail
Viviparus sp.
5 gal min · 0.75" adult · Peaceful
Buffalohead Cichlid
Steatocranus casuarius
20 gal min · 3.5" adult · Peaceful
Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.