Betta splendens


The Siamese Fighting Fish (Betta Splendens) is a beautiful and hardy fish which is becoming ever more popular as the correct and much better choice than the poor Goldfish (Kingyo) to be kept in small home aquariums. Contrary to Goldfish - which would grow to 25 cm and live more than 20 years if they weren't killed by the heaps and still as youngsters, as a consequence of living in those totally inappropriate little bowls - the Betta grows to only 5-6 cm and lives only to about 3-4 years, so even beginners and "casual aquarists" can easily keep one very well and for all of its natural lifespan. However, Bettas suffer from a very common misconception about them, even among aquarium hobbyists: they're reputed (as the common name suggests) for being incredibly aggressive and must be kept isolated. This is NOT true! In general, females are quite peaceful, and males are only aggressive towards other males of the same species (they may even fight to death) and sometimes to fish that look like them, such as dwarf gouramies and paradise fish. Because of this aggression between males, and the fact that Bettas can breath directly from the air, they are kept in those tiny pots in pet shops. But just because they can survive in those pots doesn't mean they enjoy it. Like any other fish, Bettas will be much happier and healthier if they live in a tank which at least allows them to swim around a little. Breeders say that 2 liters is enough, after all for those who own a lot of male Bettas it gets complicated to keep all of them separated in larger tanks. But for those who own just one Betta at home as a pet, it's a very small extra investment to give him a more comfortable life than his "breeding" cousins, and keep him in a larger tank. In fact, they make excellent fish for peaceful community tanks, as long as it's well planted and you keep just one male and/or any number of females. In the community tank, it's the Betta who usually suffers from the harassment of other more active species, such as tiger barbs, zebra danios, serpae tetras and others, who can tear off his long fins and force him to cower in a corner, even kill him. He also becomes an easy snack for fish large enough to gulp him into their mouths, since he's a slow swimmer, so I emphasize that he's good only for very peaceful communities. I've personally kept them in 200-300 L planted community tanks, where they lived for years and even made bubble nests and bred in there. Obviously, the fry didn't survive and ended up as live food for the other fish, despite the valiant effort of the male to try defending them.

Contributed by Marcos Avila

Siamese fighting fish don't fight to the death. If one of the males retreates the other doesn't follow. They rarely die. And if they do it is because their injuries did not heal. After a while you can't even tell they fought.

Contributed by Justin

I have been keeping fish for over 12 years now, and a betta was my very first fish. Since then I have been immensly interested in bettas, and have since devoted a lot of time in experimenting and breeding different kinds of strains. Fortunately I come from a country where you can even find wild bettas in small streams and big drains, so this gives me the opportunity to closely study them in the wild. Bettas are fairly aggressive and pugnacious fish, not only to their own kind but also towards several other species of fish. My experiments and experience with them has proven beyond doubt that bettas not only attack their own kind, male and male, I mean, but they also tend to attack fishes that are similiar in coloration and appearance to their own kind, particularly other gouramies like the dwarf gourami and lots of other fish as well. I noticed that the betta's temperament with other fish varies with different individuals. Bettas that have indulged in plenty of fights seem to be more aggressive towards other fish in a community tank. On the other hand, bettas that don't always or have never had a battle with another male tend to be more peaceful. Therefore, it is not absolutely safe to include a betta in a community collection of fish untill and unless one is absolutely sure that his or her betta is completely docile and peaceful.

Contributed by Murali Nair

I purchased a beautiful blue and turquoise betta about 2 months ago, maybe longer. He now lives at work where I spend most of my time and lives in a square container about 6 inches all the way around and about 7 inches in height, it may be a little bit bigger. The first few weeks that he was in his new environment he started tearing up his own fins. He looked like he'd been in a fight. He eventually stopped and his fins have almost grown back all the way. He is very territorial. If I point at him with my finger or even the end of a pen near his box he starts flarring up and swimming back and forth.

Contributed by Pagan

My betta, Gamma, is a beautiful red and purple fish. He was originally kept in a relatively small betta tank. (This drove me nuts.) I moved him into a 15 gallon tank, where he did well, and never touched any of the baby mollies in the tank. Unfortunately, the tank developed a snail problem, and I purchased some (apparently docile) fish to rid the tank of snails. In one night, they also rid the betta of his fins. I put him back in his little tank, he recovered amazingly, and tried to relocate him into a 25 gallon with only two other fish (closely watched, but both other fish were not of the sort to nip fins). He buried himself in a corner and would not eat or move. Strange. After a couple of days, I put him back in his tank. He was fine, ate immediately. We tried this experiment twice, and both times with the same result. Now he resides in a bowl (8" by 8") and loves it. He's got the most beautiful fins I've seen, and I don't intend to try to relocate him again. Although I feel bad that he's in such small quarters, he won't have it any other way.

Contributed by Katzen

I have a Betta, Cleo (from Pinoccio), that lives in a huge (for him) 2 gallon tank. He lives with 3 ghost shrimp, and even though they face each other down when Cleo goes to the bottom where they hang out, they get along, and since they clean the bottom, the shrimp add to the Betta's indestructable and easy-care nature. Plus the shrimp are about 40 cents each.

Contributed by Joe

Planted Aquariums

Planted Aquariums

  • Your First Planted Tank - by Marcos Avila
    A step by step recipe for a simple, inexpensive and long-lived planted aquarium.

  • Algae Control! - by Jeff Dietsch
    A very detailed article that teaches how to fight the causes of algae blooms, not just the symptoms.

  • The CO2 Fever - by Eloy Labatut and Marcos Avila
    DIY CO2 injection is easy and very cool, but does your setup really need it?

  • Low Light Plants - by Marcus Russo
    If you think you can't have any live plants in your tank because you don't have enough lighting, think again!


Marine Aquariums


Miscellaneous Aquarium Articles

Advanced Aquariums

Aquarium Fish Feeding


Aquarium Water Chemistry

  • Basic Aquarium Water Parameters - by Scott Charles
    Wondering what those symbols found in tank and fish profiles are all about? Find your answers here!

  • Understanding pH - by Marcos Avila
    Any aquarium site worth its loading time should have at least one page dedicated to basic water chemistry. Here's mine :-).

  • Adjusting pH in the Freshwater Aquarium - by Mark 'Ffishmaster' Lehr
    Check out whether you really need to mess with you tank pH and, if so, learn how to do it right!

  • Chemical Filtration - by Scott Charles
    Learn more about this type of filtration to help decide whether you need it in your tank or not.


Aquarium Fish Diseases


Advanced Aquariums

  • Are You Ready for the Big Fish? - by Tom Lay (Tommy)
    So, you want to swim with the big fish huh? Read this and see if you're prepared or not.

  • Building your own Aqua-Terrarium - by Andrew Schwartz
    From ignorance to bliss: the mishaps I had along the way to setting up this magnificent tank.

  • Miniature Aquariums - by Mark 'Ffishmaster' Lehr
    They can be just as fun and rewarding as the large ones, as long as you set them up properly!


अर्वाना asia

Arwana Asia

Arwana Asia
Klasifikasi ilmiah
Kerajaan: Animalia
Filum: Chordata
Kelas: Actinopterygii
Ordo: Osteoglossiformes
Familia: Osteoglossidae
Subfamilia: Osteoglossinae
Genus: Scleropages
Spesies: S. formosus
Nama jenis
Scleropages formosus
Schlegel & Müller, 1844

Algae Biodiesel May Soon Be Reality

By Green Options Blogger Clayton Bodie Cornell. Originally published May 24, 2007.

The biodiesel community has always been marked by spirited enthusiasm, a clear sense of mission, and the dream that biodiesel could one day play a significant role in our energy future. That dream may soon be a reality. Researchers at Utah State University say that farming algae, with reported oil yields of 10,000 gallons per acre, could become an economically feasible biodiesel feedstock by the end of the decade.

This is the Holy Grail of biodiesel: an oil source that could make a serious dent in our fossil fuel consumption. Our most productive feedstock today, the oil palm, doesn’t even come close with yields of 635 gallons/acre, and is followed distantly by the U.S. standard, soy, at 48 gallons of oil/acre.

Producing biodiesel from algae isn’t a new concept, and it’s easy to see why: algae grow voraciously (measured by the day), algae can proliferate in heinous growing conditions (saltwater or extreme temperatures), and certain species contain up to 60% oil (by weight).

Put quite simply, microalgae are remarkable and efficient biological factories capable of taking a waste (zero-energy) form of carbon (CO2) and converting it into a high density liquid form of energy (natural oil). This ability has been the foundation of the research program funded by the Office Fuels Development.”

Between 1978 and 1996, the Department of Energy (DOE) funded research into technologies that could have significant impacts on the consumption of fossil fuels. The focus of this research became the Aquatic Species Program (ASP), which investigated renewable fuel production (biodiesel) from high-oil algae species, fed by the waste CO2 from coal-fired plants. Researchers whittled down over 3,000 strains of microorganisms into the most productive 300, and constructed 1000 sq. meter test ponds outside of Roswell, NM. The ponds were set up as sort of algae ‘race-tracks’, where algae were circulated around shallow, oval-shaped ponds as carbon dioxide bubbled through the mixture. Results were successful and encouraging, but the program fizzled out after almost 2 decades (a lot of which had to do with a budget crunch and allocating more resources to researching ethanol). Researchers noted that one obstacle to large-scale algae production may be the high cost, which was estimated to be double the price of diesel at the time. (I wonder what they would say now.)

Utah State may finally take this research to the next level. Scientists there plan to produce algae in a grid of indoor bioreactors, with light captured by parabolic dishes on the roof and fed inside via fiber-optic cables. Put several thousand of these bioreactors together and you have an algae farm:

The solar bioreactor utilizes single cell algae, nature’s most efficient means to convert sunshine to biomass, which contain up to 60% oil by weight.[4] To minimize land and water resources, an enclosed bioreactor is used to grow algae on proprietary vertical membranes that resemble library newspaper racks. Harvesting of algae is achieved by periodically flushing water down the membrane from holes in the top ‘rack’. Mature algae are dislodged and collected in a bottom trough while immature algae cling to the membrane and continue to grow. Sunlight is collected and distributed to vertical panels that are sandwiched in close proximity between the growth membranes, much like alternating plates in a car battery. Oil extracted from mature algae can be converted to biodiesel using well established technologies.”

The program has been funded by $6 million in seed money from the Utah Science and Technology Research Initiative, and plans on building the first commercial plant in Utah. USU researchers say algae-biodiesel could become economically feasible by 2009.

Needless to say, this is an exciting project that I will be watching closely.