Saturday, July 12, 2008

Red Tail Black Shark

Data
Sheet

Scientific Name: Epalzeorhynchus bicolor
Other Names: Red Tailed Shark, Red Tail Black
Shark, Red Tailed Labeo, Fire Tail, Labeo bicolor
Origin: Thailand
Adult Size: Up to 6 inches (15 cm)
Social: Aggressive with own spieces.
Lifespan: 5 -8 years
Tank Level: Middle and Bottom
Minimum Tank Size: 10 gallons (or larger)
Diet: Omnivore
Breeding: Very hard
Care: Easy
Ideal pH: 6.5 - 7.5
Temperature: 73°F - 79°F (23°C - 26°C)
Tank setup: Tight lid recommended as these fishes are very strong jumpers
Sexing: Hard to determine, but the female may have a grayer stomach whereas the males are solid black.









Description:

The Red Tailed Black Shark has a black body with a red tail (hence the name). The Red Tailed Black Shark has a downwards facing mouth with two pairs of barbels. The female is slightly large than the male.


Habitat/Care:

Red Tail Black Shark are very aggressive and territorial towards their own speices. Therefore, it is best to keep only one of this species in your tank and avoid the temptation to keep them with a Rainbow Shark or other Red Tailed Sharks. Some literature has noted that in a large tank with sufficient hiding places, it is possible to keep more than one shark together, but one of these shark will be dominant shark, and will chase away other sharks when it is feeding time.

The Red Tailed Black Shark used to be found in fast moving waters in Thailand, particularly in the Mea Klong River. This river has a slow current, and has lots of wood and rocks for hiding. Therefore, and ideal aquarium should mimic the natural conditions of this fish.


However, various literature noted that the Red Tailed Black Shark is becoming extinct in the wild, and an article from Wikipedia notes that these beautiful fishes are in the Red List of endangered speices.

Many literature review indicated that these fishes are excellentjumpers. For this reason, the tank should ideally have a tight lid.

Diet:


Red Tailed Black Sharks are omnivorous and cheerfully accept a wide range of food, including flake food, worms or vegatable pellets. To ensure that they look their best, it is highly recommended to give a varied diet.

Breeding:

Reports of hobbyist breeding Epalzeorhynchus Bicolor are very rare. A large well planted tank with a ratio of more females to males is needed. The females are more robust and rounded than the males. A spawning tube will appear weeks before spawning and the male fertilizes the eggs in jerky thrusting motions as the eggs are scattered. It is said that the eggs hatch in a couple of days and the fry are easy to raise. Most breeding is done in open ponds in their native Thailand and exported around the world.


ReferencesCited:

1. FishLore, Online, Accessed 6 Jul 2008, http://www.fishlore.com/Profiles-RedTailShark.htm

2. Aquarium Land, Online, http://aqualandpetsplus.com/Shark,%20Red-Tail.htm

3. Aquatic community, online, Accessed 12 Jul 2008 http://www.aquaticcommunity.com/mix/redtailsharks.php

17 comments:

Grace said...

I am a huge fan of this fish, having kept them since I began in the hobby as a preteen. They are usually quite passive and do not bother other fish in a community setting unless bullied first. Then, they are usually able to give as good as they get. The only exception to this is some Cichlids that are more aggressive and can bully them to the point of illness or death. Though this fish can adapt to just about any water conditions in terms of PH or hard/soft water, they really do best in soft, slightly acidic water. They are somewhat forgiving of water quality, but shouldn't have to be. Again, this is a wonderful fish. I have never tried to keep more than one in a tank at a time, but as a single species in various community tanks I've had over the years, they are a great addition!

Hermes said...

I've kept them a few times but your right about their aggression. Mongabay has perhaps the best account of breeding them - but says how difficult it is. Another great post.

sank63 said...

Hi Eugine!
I thought you had given up blogging. Found your site aging by accident and have to tell you it looks better than ever congratulations and I'm so glad to see you back in the blogsphere. I see you married as well in the last few years since I've read your site. Congratulations on that as well.
I'll be a regular reader again and add you to my side bar. (Note that I have a new URL)

Anonymous said...

It's awesome!I love the Betta section a lot!!And the aquarium tanks are an eye-opener for me.LOL~
Thanks for sharing with us!!
XOXO

Anonymous said...

The red tailed black sharks are a beautiful addition to tropical fish tanks. I've got 5 in a 40 gallon tank. They've been living together for just over two years. I don't play with water chemistry at all. I've got the cheapest setup imaginable.

I don't believe the information I see posted on the net about these sharks being aggressive. I've never had any injuries and although they don't school, they don't fight. I find it hard to believe that a fish with a down-turned mouth has the weaponry to cause damage.

I've found the sharks near impossible to feed. My sharks spend the day graving on algae and ignore almost all commercial foods added to the tank.

Bristle nosed catfish have just spawned in the 40 gallon tank. After hours spent studdying the fish behaviour, I don't believe that red tailed black sharks have any interest in eating other fishes fry. In a environment with developed vegitation and algae growth on every rough surface, the red tailed black sharks are peaceful algae grazers.

Anonymous said...

looking for some advice please. I have not had a red tailed shark before, I bought one for my tank which is fairly large and has plenty of hiding places, I feed some flakes, frozen mixed food and some sinking wafers. It seemed to be doing fine and ate well but died after about 10 days with no obvious signs of illness, I do have some salt in the water for the other fish and wondered if the sharks are very intolerant to it?

Anonymous said...

I just brought a Red Tail Black Shark home last night and was disappointed to see that it's tail was CLEAR. ??? I was about to call the pet store on Monday and ask them if they'd exchange it for one with a red tail.....and I see that the tail is beginning to color as the shark gets comfortable in the tank. Anybody else ever had this experience? I'm still going to call the pet store and ask them about it but it was strange because I only saw ones with the red/orange tail in the holding tanks and was surprised when I got it home and saw it had no color in the tail. Weird or not?

Victoria said...

im hoping to get a res tail black shark soon, ive just litterally been looking up better sized tanks. i will prob keep its totally seperate unless i find something it can get on with. im not a big fish fan, i like fish but im an active person but i do like to sit and watch them and seen red tails and thot i want lol.
kept gold fish etc before so this is a new experence. plus i cant find any in this part of scotland:s

Paul H said...

Hi i have just bought a red tail black shark because my other died about a year ago i also got 5 neons aswell and i already had 1 in my tank. i have had them just over a week and all but 1 neon has died. does anyone know if my shark could have killed them.

Yu-Jin Lim said...

Paul, Red tail do occasionally fed on neon if the neon are smaller and the red tails are big. I would separate the neon and red tails black shark.

How did find my blog? It is surprising to me that my small blog is found by so many readers.

Robert said...

i have a 35 litre fish tank and have a red tailed black shark that is about 1 inch long. i have a plecostomus that is about 3 inchs long also. my poor little shark seems ever so bored. ive tried everything putting in new plants new ornaments third water changes EVERYTHING! and still he never showed any interest in anything he just sat in his log all day. i woke up in the night and found him still in his log. i thought he was dead so took him out but his gills were still moving so i put him back and he went straight back to the same log. i am wondering whether putting in some tiger barbs or something in for him to interact with. have you got any fish suggestions!!!

Anonymous said...

I have a 30 gallon tank full of nothing but Red Tail Black Sharks and Glo fish. Seven of each and they get along fine even with a few really small Glo fish. It almost seems some of the bigger Glo fish are mimicing the Red Tail Black Sharks.

Anonymous said...

I hate this fish I tried a few times to keep them I don't know who said they are not aggressive they killed a whole community tank on me another killed 5 cichlids maybe a species only tank will work they look kool but I will never own or recommend one ever again and I can care for them I have been in the hobby for years

Mike said...

What a niche fishes. You have made some very nice shots !!!

Jesskas Garden said...

Red tailed black sharks are great, but all these people putting them in a little tank.... Honestly! It's cruel!
I have just one in a 100 gallon/300litre tank.
He has plenty of places to hide in amongst the driftwood and plants. They really shouldn't be kept more than one to a tank unless you have a tank the size of mine AND you have aqua scraped good hiding places at either end AND you feed at both ends of the tank so they can be happily situated without bothering each other.
I have a few large mollies in my tank, and my little shark will chase the largest ones off at feeding time. He doesn't nip, just chases them off. He's not interested in the smaller fish at all.
They go greyish and their tail goes clear when they're stressed out. This will usually happen with too drastic a water change, big spikes in water parameters, moving from tank to tank etc. don't worry too much.
They are very very easy to care for, tolerate a lot of change but PLEASE no small tanks!!!

Anonymous said...

Many of these beautiful fish will look fine in the store, but when added to the tank lose color, brownish with a clear tail. Just let it accimate to the tang and it's tail will go back to bright red, with a velvety deep black body. Loss of coloration is a classic sign of stress . If your previously bright shark starts to fade, the fish is likely stressed. If color doesn't reappear in a short time, you may want to move the fish to a hospital tank, and monitor for illness. We keep a 10 gallon tank, treated with metyhylene blue to quarantine fish that may not be doing well. 24 hours later, they are usually back in one of the main tanks, our 80 gall

Anonymous said...

I searched for 'red tailed shark breeding' . We have an 80 gallon population: 1 Oscar, a mating pair of Jack Dempseys, a mating Convict pair (currently watching over their brood of 80 fry) , besides the cichlids, a male amd female redtail pair, a pleco, an Eartheater, three tin foil barbs, we had 4 hatchet fish, until the Oscar decided they were a tasty treat. Our 30 gallon has the remaining hatchets, tiger barbs, lampeye tetras and a small redtail shark. The last tank, a 10 gallon houses live food for Oscsr, and is used as a quarantine tank for infected or ill fish