Rainbow Shark Tropical Fish Information

Epalzeorhynchos frenatum
Rainbow Shark
Behaviour Generally peaceful although will fight with its own kind
Typical size 12cm
Max size 15cm
Tank Area Bottom, middle
Min Tank Size 120cm
Min Number in Tank 1
Temp Min: 24℃ Max: 26℃
Feeding Frozen, live, sinking, vegetable based foods
pH Range 6-8.5
Hardness vs,s,m,h
Ruby Shark Epalzeorhynchos frenatum
  • Ruby Shark Epalzeorhynchos frenatum - thumbnail
  • Albino Ruby Shark Epalzeorhynchos frenatum - thumbnail

Rainbow Shark (Epalzeorhynchos frenatum)

Rainbow Shark Tropical Fish Learn all about the Rainbow Shark's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Rainbow Shark is the right fish for your aquarium.

The Rainbow Shark (often referred to as the Ruby Shark) is similar in appearance to the Red Tailed Black Shark but arguably much more peaceful. Although individuals will act aggressively towards others of their own kind, they are much more peaceful towards other fish and can be kept in a community. In many cases, if Rainbow Shark's are kept in groups in suitably large tanks there are fewer disputes between individuals. Due to its eventual size the Rainbow Shark is best kept with medium sized robust fish. The aquarium should contain plenty of hiding spots and no sharp substrates. Rainbow Sharks are good algae eaters although they will damage delicate plants. An albino variety is commonly available (pictured).

Rainbow Shark Facts

Family Cyprinidae (Carps & Minnows) | Synonyms Epalzeorhynchos erythrurus, E. frenatus, Epalzeorhynchus erythrurus, E. frenatus, E. frenatum, Labeo erythrurus, Labeo munensis, Labeo frenatus | Other names Ruby Shark, Rainbow Sharkminnow, Redfin Shark, Redfin Shark Minnow, Whitefin Shark, Albino Ruby Shark | Origin Asia; Mekong River basin | Natural Water Conditions pH 6-8, very soft to medium | Natural Habitat Sandy bottomed rivers, flooded areas | Sexing Males are thinner with a darker anal fin

Rainbow Shark Help and Advice

If you have a question about keeping Rainbow Shark's then please use our Rainbow Shark help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

question mark     

Check tank mates for the Rainbow Shark fish species

You are in the thinkfish community creator for the Rainbow Shark fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Rainbow Shark species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Rainbow Shark information box above and your local water company providers website. Don't waste your money and endanger your fish!
Tank Details
question mark  Rename your tank:
question mark  Length: (cm)
question mark  Volume: (Litres)
question mark  Filter type:

* Recent changes to stocking & filter advice October 2018
* This fishtank will only last for this session - to save your tank please Join/Log in

question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm

There are currently no fish in your fish tank. To add fish, you can click the 'Add the Rainbow Shark to your tank' button. Or search for a different fish using the options presented above

sample fish tank
See an example tank as it would show on a user profile with enabled settings and community tanks.

To save your tank details in the Fish Community Creator you must be logged in CLICK HERE to login or create an account further down the page below

If you'd like to talk about the "Rainbow Shark" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, Rainbow Shark fish behaviour, Rainbow Shark tank stocking and any other issues related to the Rainbow Shark fish or other types you may have.

Help us keep great tools like this online by becoming a think fish supporter . You will help with our hosting and development costs. From as little as £1.16 per month - Become a Supporter today

Click to read the Latest Tropical Fish discussions from Thinkfish users.

Think Fish Tropical Fish Forum
Tropical Fish Market Place
Fish of the month

Helping Fishkeepers With Their Fishkeeping Needs Since 2006