Topic: My betta tank dividers - Welcome To Bettas Friends.

Betta splendens- The ultimate tropical fish

The Betta splendens or by its common name Siamese Fighting-Fish is a beautiful hardy tropical fish. This Siamese Fighting-Fish is from the Mekong river basin in Thailand, Vietnam and Cambodia (South-East Asia). Usually lives in shallow waters with little water movement, like Rice-Paddies. In nature, this specie's males have shorter fins that those we usually see in shops, these are called by the Thai "Plakad" (meaning- "Fighter"), and are used in Thailand for show-fights (just like roosters). Although their fins are short, they are still bigger than those of females. These males are more aggressive than long-finned males, but they are less susceptible to infectious diseases and have faster ability to recover after fights. Of the long-finned strains, there's the most known Veil-tail, which are the commonest in shops. More appreciated tail forms are the Round-tail, Fantail, and Delta-tail. All these tail forms can appear in two fin forms- Double-tail and Comb/Crown-tail. Double-tail has a long dorsal fin, and their caudal fin is variably divided to two lobes. Comb-tail has fin rays that grow variably longer that the fin's soft tissue, resembling a comb. Crown-tail is a Comb-tail with equal and symmetric lengths of fin rays and soft tissue. Another famous strain and probably the most famous is the Half-moon. This is a fin form, appearing mostly on Delta-tails, in which the caudal fin is spread to 180o, while flaring. Aside of it, the fish must have other criteria to be considered as a true Half-moon.

Aside from tail forms, these fish come in all colors and patterns. In nature, they have a black body, with turquoise/blue/steel-blue iridescent on it, and red washes on it fins. The first color strain produced was called Cambodian, with clear-pinkish body and red fins. By today, with further understanding the fish's genetics, we have Solid colored fish, in the colors of Red, Non-red Yellow, Black, White, Orange, Royal-blue, Steel-blue, Turquoise and the newest- Copper. Then comes the Bi-colors, mostly Cambodians and Iridescent with red or yellow washes on their fins. And along side with these, come the Tri-colored, also known as Multi-colored, mainly containing the colors- Clear + Iridescent + Red. Patterns have also developed, from the "solid" regulars, we've got to Variegated-fins (the most appreciated is the known Butterfly), and Marbled (which can change their color patterns throughout their life). Every breeder give different names to the strain lines they create, one of these, most known, is the Mustard-Gas created by Jude Als. By looking at all the colors, patterns and tail and fin forms, it is easy to see why this fish is probably one of the most known and popular freshwater fishes. The betta is a carnivore fish in its natural habitat; it eats mainly insect larvae, small crustaceans and other aquatic invertebrates. The fish is mostly accustomed to dry commercial foods, so will have no problem with these foods- make sure it is mainly meaty foods. In out fish tank the fish is mainly calm, and might be shay in community aquariums at start, once settled it will get active. Males and females are aggressive towards each other. In long-finned cultivated strains, females tend to be more aggressive than males. Males will always fight over territory and might kill one another. The betta is durable to low water conditions, though; long-finned strains are more susceptible to high amounts of nitrogen compounds in water and will quickly suffer from fin-rot, dropsy and other illnesses. In large aquariums these fish need good filtration system with low to moderate water flow. If water flow is too strong, the fish will settle in a spot where flow is lowest and will hardly move from it. When kept in a jar, water should be changed every week- the amount of water changed, depends on the jar's volume. Some people buy dry leafs of a tree called Ketapang/Indian Almond-tree (Terminalia katappa) and insert them to the fish's jar. It is said to help preventing infectious diseases and getting the fish into breeding-mood. When feeding these fish, avoid over-feeding, as these fish tend to gorge itself, which might end up in a bloated fish suffering from deadly incurable Enlarged-leaver.

About the author: Rotem Gavish is a fish expert. Dedicating his life to this beautiful hobby, his expertise is in all related to aquarium world such as tropical fish, fish tank, marine fish, plants and invertebrates. Rotem established his site with the vision of sharing tips and free information.


Frequently Asked Questions

    Where to find a divided tank for Betta fish?
    People say if you mix Betta with other fish, they'll fight. So, I want a tank with a divider, but in the pet store the divided tanks only come in really small travel-like sizes. Where can I find a bigger divided tank. I already have one betta, I'm looking to buy another and put them in this type of tank.

    • ANSWER:
      You can purchase tank dividers.... you could divide up a 10 gallon tank very nicely like that.

      You can get 10 gallon tanks for about most places, including walmart.

      Tank divider

    Betta fish in divided tank, one of them keeps floating to thentop?
    Hi, I got two normal type betta fish in a heated 1 gallon divided
    Tank, I only have rocks and will be getting some aquatic plants soon and maybe a bubble filter to add more oxygen, anyway the blue one always floats at the top not on his side or anything no ick and he eats really well and swims to the other sides from time but mostly just stays at the top floating, I got them a few days ago, the red one is actively swimming and flaring his gills. Why is the other one always floating at the top? Please help

    • ANSWER:
      i dont have to even read the whole thing to know that the problem is tank size and ammonia.

    How do I filter my 10 gallon divided betta tank?
    I have 3 male bettas inside my 10 gallon fish tank and one male betta inside my 2.5 gallon fish tank. I have one aqueon filter to filter the whole 10 gallon tank but I want the flow to be divided equally without buying more filters. Should I just rotate my filter to each bettas section everyday?

    • ANSWER:
      As long as the divider has plenty of holes the clean water will circulate to the other chambers.


    what is a good ten gallon tank to divide for two betta fish ? Or is there a five gallon tank that is divided ?
    I have a betta in a small tank and want to get another one. I probably should get one with a heater and filter. WHAT DO I NEED ????????
    Can you tell me where i can buy a ten gallon tank
    And what size (watt) heater should i get. im probly gonna get a 5 gal. but i need to find one already divided. what is cycling your tank ?

    • ANSWER:
      Your betta will love you for getting him a tank with heat and filtration. You will find that the fish will act very differently when in the proper container. A 10 gallon tank would be great. If you want 2 betta's it will be large enough to support both of them. Just be sure that the water will flow thru the divider so that all the water will be filtered and heated. You should also have about 1-2 inches of aquarium gravel on the bottom and a gravel vac would be helpful for water changes.

      When you set up the new tank, do an internet search on how to cycle your aquarium. For a betta tank, I suggest the fishless cycle. There is a lot of work for the first 2 months, but it will be all worth it in the end. After the tank has cycled, maintenance will only be once a week. You will do a 10-25% water change with the gravel vac, and test the water params. You will also want to check the water temp. Other than that, you will change the filter media every month or two. Good luck and enjoy the new tank.=

    Question about Betta Divided Tanks (10 points)?
    I have a 5.5 gallon fish tank and was planning on dividing it in half. Anyway how will this work? Any ideas where I can buy the piece of glass and how do I attach it to the tank to divide it? Second question is how will I clean the fish tank. My gravel cleaner wont be able to full submerge with the divider in the way. How will I clean my fish tank then? Thanks!

    • ANSWER:
      Part 1 - People advise at least 5 gallons for a single Betta. Unless you have a 10 gallon don't divide the tank in half. 5.5 gallons will be fine for a single Betta. For the divider, try to buy a plastic translucent board from a book shop and cut it out the desired size. Drill some holes in it with a drill bit and add on suction cups to make an easy, cheap divider that does not allow them to see one another. Adding in the holes is optional to share filtration and can be skipped.

      Part 2 - Get a smaller siphon, or one of those pumps which you can manually start without shaking, just pumping.

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