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The Labyrinth Fishes, Part I
The Gouramis
by Jennifer Wilkinson, CAS
originally published in The Calquarium
Volume 41, Number 11, July 1999
Colisa sota
In the honey gourami the female is larger than the male. The
female gets to a total length of 4.5 cm, while the male gets to a total length
of 4 cm. The males are a beautiful bright orange color, and have a black throat
and abdomen that extends into the front part of the anal fin. Most of the dorsal
fin is bright yellow. The males are not quite as bright when out of spawning
condition. The females are plain, with the body being slightly tinged brownish
orange, with a silvery fluorescent glow.
The natural range of these fish is northeastern India, Assam,
and Bangladesh.
The honey gourami is well suited to a community aquarium,
although it can become territorial, especially at spawning time. They prefer an
aquarium with some thickly planted areas but also like some open swimming areas.
They are not fussy as to water requirements. They do prefer clean water, with
regular water changes. They will eat just about everything being fed to the
community tank.
These fish are moderately easy to breed, meaning a little more
difficult that Colisa lalia but not impossible. Set up a well-conditioned
pair in a 40-liter aquarium with lots of floating plants, no air stone or filter
(They may need to be conditioned separately). The male will build a large bubble
nest. The eggs will float up into the bubble nest, but the male may move them.
However he will guard over them until they go free swimming, which is when he
should be removed. The female should be removed right after spawning. The eggs
are clear at first, then turn yellow, then black before they hatch.
I haven’t quite made up my mind if this is a gourami that I
would want to add to one of my community aquaria. It’s a little more difficult
to keep and breed. Perhaps at a later date, if I have some success keeping the
easier ones. The good thing about this fish is that it stays a small
size.
Trichopsis vittatus
It is difficult to tell the difference between the sexes of the
croaking gourami. The males have more color with a red edge to its longer anal
fin. The males get to a total length of 7 cm, while the females get to a total
length of 6.5 cm.
These gouramis come from eastern India, Thailand, Vietnam,
Malaysia, and Indonesia. They live in standing or slowly moving waters with lots
of plant growth.
The croaking gourami is a good community tank inhabitant. They
are peaceful and will get along with tank mates that are not too big. They can
even put up with polluted waters although I would never recommend trying this.
They will accept dry foods, however live foods should also be a part of their
diet. If more that one male is placed in an aquarium, they will circle each
other and make a croaking noise, hence the name. This behavior never causes harm
to the fish.
Breeding these fish is fairly easy. Set up a well-conditioned
pair up in a 40-liter to 60-liter aquarium with some floating plants. No air
stone or filtration is needed. A clay flowerpot on its side will serve as a
bubble nest building site. Sometimes the bubble nest is build at the surface
under the floating plants. The male wraps himself around the female and the eggs
sink to the bottom. The male quickly scoops up the eggs and places them into the
bubble nest. Usually there are around 200 eggs per spawn. In small aquaria the
female should be removed after spawning. In larger aquaria, she will indirectly
care for the spawn by guarding the outside areas of the nest. If the male chose
a nest site that was not near the surface of the water, he will move the nest to
the surface as soon as the fry hatch.
This sounds like a very interesting gourami to keep. It may not
be as colorful as some, but their behavior caught my attention. This fish stays
small, and sounds like it would fit nicely into one of my community aquaria. Now
where can I find a pair or a bunch of nice healthy young
fry?
Sphaerichthys osphromenoides
In the chocolate gouramis the males are larger with
better-developed and somewhat pointed dorsal fins. The male has a total length
of 6cm, while the female has a total length of 5.5cm. These fish are a dark
brown color with three or four stripes. They have a forked caudal fin.
They come from the southern part of Malay Peninsula, Sumatra,
and the southern part of Borneo. They are found in weed-grown puddles and
shallow ditches, and in slow flowing streams, often in dark brown water.
These fish must be kept in a species aquarium. They WILL NOT
SURVIVE in a community tank for very long. They require soft acidic water with a
pH of 6, is very clean and slightly moving, and with a temperature of 28C. The
aquarium should be 100 liters or larger with some peat added. Black water
extract could also be used. Regular water changes are a must. Live foods are a
must, but they may eat some prepared foods as well.
The chocolate gourami is very difficult to breed, but if kept
under the above-mentioned conditions, they should spawn readily. The females are
mouth brooders. The male will help with the eggs, which are laid on the bottom
by spitting them over to her. The young are released from the female’s mouth in
17 to 19 days. At the time they are released they are already a chocolate
color.
This is another gourami that sounds fascinating to keep. But do
I really want to set up a species aquarium right now? No, I don’t think so.
Perhaps at some future date.
In conclusion to The Gouramis, I would like to say that
this family of fish for the most part sounds very interesting to keep in the
aquarium. I personally feel that I don’t want to keep the food fishes. For one
thing they get way too big for any of the aquaria that I own. The other thing is
I don’t find most of the larger fish pretty to look at.
I didn’t really mention how to raise the fry so I guess I
should mention that here. Most gourami fry grow very slowly. Allow at least four
to six months to raise them to selling size. They all require infusoria for a
first food, then will eat baby brine shrimp. Then most will graduate on to the
prepared foods and larger live foods. Culling is a must as there are usually too
many fry for the hobbyist to raise properly. However if one has a lot of
aquaria, they can be spread out. Over crowding will only cause poor growth and
stunted fish. Not a pretty sight.
Now I’m off in search of the gouramis that I chose out of this
list. I hope my research will be helpful to other hobbyist interested in this
family of fish. ?
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