Name: Danio malabaricus
Origin: India, Sri Lanka
I have two giant danios that I purchased as starter fish for my 55 gallon tank. The store said I could bring them back after the tank matured - but, I'm keeping these two! They are quick, lively, entertaining & a joy to watch! I'm very pleased with my danios!
My roommate and I added a Giant Danio who we named Aquadus, to our small five and a half gallon tank that at the time only housed our Tiger Barb, Tigger. The Barb had been the predator of the tank and killed off several of our other fish, two Oscars, and a Gourami. When we introduced the Danio, it didn't take long to see that he would be the dominator of the tank. The Danio would chase the Tiger Barb into one particular corner, and would hardly let him move. If the Tiger for any reason left the corner he was almost immediately attacked and quickly returned to the corner. To ensure the health of our Tiger, who had been with us for a long time, we both made the decision to put the Danio into a seperate tank.
I just added 6 giant danios to my 300 liter community tank. I would compare them to a family of otters. They love to play. They will chase, investigate, and play with other fish, especially the head and tail light Tetras and Bala Sharks. They don't nip, but they seem to have their own version of tag. When I get close to the tank they will get in a tight school for protection. One of their favorite things is to play in the bubble wall at the back of the tank. They create a lot of movement in the tank. At this time they are the largest members of the tank. It will be interesting to see what happens when some of the other fish get larger.
I found these fish to be very aggressive toward one another. I bought three to break in a new 110 liter tank. The first day and a half went fine. When I came back from work Monday evening, I found two of them hiding and the other one patrolling the tank. The smallest one had its tail chewed up. After that, I noticed constant chasing by the dominant fish, so I removed him. When I did that the next larger fish started harassing the smallest one. As of now, I will return the next larger fish also and let the runt recover. Nothing I read prior to purchasing these fish prepared me for this experience. That's why I thought I should put this on line. I have to admit now, that when I returned the bully, I could see the bad behavior taking place in the stores tank. There were several badly chewed up smaller danios, and the others were at each otherīs gills.
I had two Giant Danios that I purchased along with all my other fish to put in the tank. The Danios after two days became extremely aggressive towards all the other fish apart from the neon tetras and the fighter. I gave them a chance to improve their behaviour but they became far more territorial and they messed up the movement of the tank because of their hyperactivity. I took them back to the shop before they did any severe damage.
Giant Danios are great. Super strong swimmers. Built for speed. Cool colors...reflecting an aqua and orange brilliance. Good size so you can have a fast fish that won't get eaten by fish such as large Tinfoil Barbs. I wouldn't have them with Oscars or Jack Dempseys though. That wouldn't be smart. Just a cool fish.
I have 12 giant Danios in my 440 liter tank and they get along with everyone else just fine. I also have 10 green tiger barbs, 2 albino corys, 6 large gold fish, pleco, alge eater, dojo loach. When I first got my danios I only had 2 and they bothered everything. Now that I have more, they attack each other. More is better.