Sixray cory
Aspidoras pauciradiatus
Care at a glance
- Temperature
- 70–81°F (21–27°C)
- pH
- 5.5–7.2
- Adult size
- 1.4 in (3.5 cm)
- Minimum tank
- 13 gal (50 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- Hard
- Rarity
- Very rare
- Origin
- Brazil
- Family
- Callichthyidae
Overview
This is a peaceful, social bottom dweller that should be kept in a group of six or more, and its small size makes it a good fit for nano tanks of around 50 liters. It spends its time foraging across the sand. Feed sinking pellets, wafers, and small frozen foods like brine shrimp or bloodworms, and make sure food reaches the bottom. A soft substrate, gentle flow, and soft acidic water keep it healthy.
In the wild
The sixray cory comes from soft, slightly acidic streams in Brazil, often in slow, shallow water over sand with plant cover and leaf litter. Recreate that with a soft sand bottom, gentle flow, some shade, and a temperature in the low to mid-20s C. A planted tank with hiding spots helps these shy fish settle in. Keep the water on the soft, acidic side, around pH 5.5 to 7.
Good to know
Aspidoras pauciradiatus is a small armored catfish in the family Callichthyidae, closely related to Corydoras. It is tiny, topping out around 3.5 cm, which makes it one of the smallest of the group. It scatters eggs onto plants and surfaces, with eggs hatching in a few days, and breeding it is difficult. Like its relatives, it carries bony plates instead of scales.
Did you know
Like other corys, the sixray can take a quick gulp of air at the surface and absorb oxygen through its gut, a backup system that lets it cope when oxygen in the water runs low.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Freshwater fish · Corydoras · Schooling fish · Community fish · Bottom dwellers
Keeping Sixray cory?
Track water tests, reminders and stocking fit.
Related species

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Aspidoras raimundi1.8 in (4.5 cm)15 gal (55 L)68–77°F (20–25°C)
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Corydoras cochui1.4 in (3.5 cm)13 gal (50 L)70–82°F (21–28°C)
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