Leopard Corydoras Julii 3cm Catfish
Image for illustration purposes only. Exact colours, patterns, and size may vary between individuals.
Delivered alive, guaranteed
Live fish delivery is £20 per order, delivered Thursday, Friday or Saturday, arriving before 1:00pm on the day you choose at checkout. Packed by aquatic specialists and shipped overnight with a dedicated livestock courier, every fish is covered by our Live Arrival Guarantee with automatic refunds. See How Live Fish Delivery Works for full details.
When will my fish arrive?
| Order placed | Delivery day |
|---|---|
| Up to Monday 11:00am | Thursday (that week) |
| Monday after 11:00am – Tuesday 11:00am | Friday (that week) |
| Tuesday after 11:00am – Wednesday 11:00am | Saturday (that week) |
| Wednesday after 11:00am – Sunday (any time) | Thursday (following week) |
Overview
The Leopard or Julii Cory (Corydoras julii) is a small armoured catfish covered in fine dark spots on a silvery body, with a black dorsal blotch and striped tail. It comes from coastal rivers of north-eastern Brazil. Peaceful and sociable, it is an ideal bottom-dweller for soft-water community tanks.
- Adult Size: Around 5.5 cm (2.2 in); females larger
- Lifespan: 5–8 years
Origin
- Native to: Coastal rivers of north-eastern Brazil, south of the Amazon delta
- Habitat: Slow, shaded streams and creeks over sand with leaf litter
Feeding
- Diet: Omnivorous, bottom forager
- Preferred Foods: Sinking pellets, catfish granules, frozen bloodworm, Daphnia, Cyclops, mosquito larvae
- Feeding Habits: Feed once or twice daily after lights dim; do not rely on leftovers
Tank Mates
- Best with: Small tetras, rasboras, pencilfish, dwarf cichlids, other corys
- Avoid: Large, aggressive or fin-nipping species
Aggression & Behaviour
- Temperament: Peaceful and gregarious
- Territoriality: None
Experience Level
- Difficulty: Beginner
- Challenges: Barbels erode on coarse gravel or dirty substrate
Water Parameters
- Water Type: Freshwater, soft and slightly acidic
- Temperature: 20–26°C (68–79°F)
- pH: 5.5–7.5
- Hardness: 2–12 dGH
- Flow: Slow to moderate
- Tank Size: Minimum 80 litres for a group of six
Final Notes
Keep a group of at least five on a soft sand substrate so they can root about safely. They gulp air at the surface, so leave a gap beneath the cover. Egg scatterers: a large, cooler water change often triggers spawning, with adhesive eggs stuck to glass and plants. Note that many fish sold as julii are the similar Corydoras trilineatus; care is identical. A rewarding, long-lived little catfish.
Please Note
The livestock that is sold on our online site is not held in store at our Birchwood Aquatic Centre shop. Species sold at the Birchwood Aquatic Centre physical store may differ from ones available to order to your door.
Frequently Asked Questions
In insulated boxes designed for live transport, packed by aquatic specialists,
overnight with a licensed live-animal courier, arriving before 1pm.
It is covered by our Live Arrival Guarantee.
Photograph it within 4 hours of delivery, email info@birchwoodaquaticcentre.co.uk with your order number, and the refund is processed automatically. The cover continues for 7 days after arrival.
Wednesday, Thursday, Friday and Saturday. You pick your day at checkout; please choose a day someone is home.
Yes. One basket, one checkout; the fish arrive with the specialist courier and the rest of your order ships as normal.
We can deliver to UK mainland only for live fish.
Follow the five-minute acclimatisation steps in our When Your Fish Arrive guide: float the bags, add tank water gradually, net the fish in, lights low, feed tomorrow.