Corydoras trilineatus. Photo Credit:
Name: Corydoras julii & trilineatus
Origin: Ecuador, Peru, Brazil
I keep two juliis with a Bronze Cory in a large well-planted tank. They share the lower regions of their environment with a Rainbow Shark and two Otocinclus affinis and all get along well. The two julii Corys will almost always remain together but will hang out with the Bronze Cory on occasion, even though he is slightly larger. These julii Corys are constantly in search of food particles in the substrate and scour the abundant live plants and driftwood for traces of food. They also accept algae wafers but consider a finely chopped frozen seafood mix a special treat. Since the Cory Cat can also process oxygen in their intestines and take air at the surface, they prefer a tank with shorter sides, something under 18 inches or so.
Corydoras julii and C. trilineatus are two different species. In C. julii the spots on its head are distinct and individual. On C. trilineatus, the spots on its head are joined three or more together to form patterns. Also C. trilineatus is larger than C. julii as adults.
These fish are the exact same as any other cory: always hungry, hardy, peaceful, small, and a great indicator fish. They are rather like the albino cories in size. Be careful when keeping them with zebra fish though, because they can be mistaken by the zebra fish as an intruder. They will eat anything. I highly reccommend getting several. They do better in groups.
I love my Leopard Cories - very happy little fish. They have an odd tendency to swim up down up down and up out of the water so make sure you have a hood. They all sleep on a rock together like a big family and will just sit around watching the world looking out at me. When hungry, they wiggle wiggle, looking for food. Make sure your tank is non-toxic as they live on the bottom where the bad water is. Great fish all in all, but make sure you have at least 2 because they need companionship.
Be still my heart! This is the most incredible species of cory, IMO. They are what caused me to notice corydoras fish in the first place. Before I knew about julii, I just thought "catfish were catfish" and nothing special. These little guys are so full of personality and so easy to feed and keep. I've got 4 julii in a 100 liter, and when they rest, they all rest together until one decides to 'get back to work'. When one goes back to work, the rest go, too. Mine eat everything! Blood worms, brine shrimp, flake, algae wafers, shrimp pellets - I've never seen them turn down any food that's offered. My julii are about 2 years old and are about 4 cm long. Beautiful markings, and splendid personality: the julii has it all!
It has been said already by someone else, but I want to mention it again. Corydoras julii and Corydoras trilineatus are 2 different species. The difference between the species is in the spotting on the head: C.julii has distinct individual spotting, whereas C. trilineatus has reticulated lines. C.julii has its origin in Brazil whereas C. trilineatus comes from Peru or Ecuador. Also, C. julii is not as robust as C. trilineatus. What you can buy in shops is mostly C. trilineatus, often sold as C. julii. I too bought mine thinking I was buying C. julii, but I found out later that I had bought trilineatus. I keep mine with different other species of corycats (aeneus albino, schwartzi, metae, arcuatus and sterbai) as well as other peace-loving fish.