Julii cory
Corydoras julii
Also known as leopard cory
Care at a glance
- Temperature
- 68–79°F (20–26°C)
- pH
- 6.0–7.5
- Adult size
- 2.2 in (5.5 cm)
- Minimum tank
- 20 gal (75 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- Hard
- Rarity
- Very rare
- Origin
- Brazil
- Family
- Callichthyidae
Overview
The julii cory is a peaceful, spotted shoaler that should be kept in a group of at least six. It forages across the sandy bottom with its barbels and mixes well with small, calm community fish that leave the floor clear at feeding time. Feed sinking pellets, frozen bloodworm and daphnia, and a little wafer, checking that the food settles where it can reach it. A group is comfortable in a tank of around 75 liters or larger with soft sand to sift.
In the wild
The true Corydoras julii comes from clear coastal rivers of northeastern Brazil, living over sand in warm, soft, slightly acidic water. Give it a soft sand bed, driftwood, dried leaves, and shaded planting, with clean, gently filtered water. Keep the temperature between 20 and 26 C and the pH from about 6.0 to 7.5. Regular water changes keep this delicate cory in good condition.
Good to know
This armored catfish of the family Callichthyidae reaches about 5.5 cm and wears a pattern of small, separate dark spots that do not join into lines on the head. It has been bred in aquaria but is rated difficult. True C. julii is rarely imported, and most fish sold under the name are actually a look alike, the three line cory Corydoras trilineatus.
Did you know
Almost every fish sold as a julii cory is really the three line cory, Corydoras trilineatus. The true julii wears fine, separate leopard spots on the head, while trilineatus shows those marks joined into maze like lines.
Where to buy
Some links may not be the exact species or variety.
- Aquatic Arts Freshwater fish, shrimp and snails with an arrive-alive guarantee
- Flip Aquatics Quarantined shrimp, snails and nano fish
- LiveAquaria Freshwater and saltwater fish, inverts and corals
- Dan's Fish Freshwater fish, shrimp and snails with a live arrival guarantee
…or ask your local fish store.
Appears in
Freshwater fish · Corydoras · Schooling fish · Community fish · Bottom dwellers
Keeping Julii cory?
Track water tests, reminders and stocking fit.
Related species

Skunk cory
Corydoras arcuatus2.2 in (5.5 cm)20 gal (75 L)72–79°F (22–26°C)
Spotted cory
Corydoras melanistius2.2 in (5.5 cm)16 gal (60 L)72–79°F (22–26°C)
Threestripe cory
Corydoras trilineatus2.2 in (5.5 cm)16 gal (60 L)72–81°F (22–27°C)
Violet cory
Corydoras similis2.2 in (5.5 cm)12 gal (45 L)70–81°F (21–27°C)Burgess's cory
Corydoras burgessi2.2 in (5.5 cm)20 gal (75 L)72–79°F (22–26°C)False network catfish
Corydoras sodalis2.2 in (5.5 cm)16 gal (60 L)72–79°F (22–26°C)
