I've got some threadfin rainbowfish (Iriatherina Werneri) in one of my tanks. I'd like to add more to the group. They're marvelous looking fish. especially when a male starts courting then he's flaring with his fins in a very beautiful way...
Threadfin rainbowfish
- Thread starter emeraldking
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That's one of my top five fish. I've been looking for a group for many years now. The ones I see in stores are usually all male, and really thin. I don't know if it's tb, or simply starvation. Plus, I don't know if the all male groups are the result of farms sorting, or hormone use. Male threadfins are fantastically beautiful fish.
I used to breed them, and on the first batch, didn't have enough fine food/infusoria/micro-organisms ready for the fry. The 2 or 3 survivors I raised looked very skinny and sickly. I had proper food ready for the second batch, and they grew normally.
I've wondered if the microscopic foods they need when fry aren't on offer at the fishfarms, and if the fish we're getting in North America are physical wrecks as a result.
When you look at the tiny mouths on adults, it's hard to imagine how small they must be for newly hatched fry.
I used to breed them, and on the first batch, didn't have enough fine food/infusoria/micro-organisms ready for the fry. The 2 or 3 survivors I raised looked very skinny and sickly. I had proper food ready for the second batch, and they grew normally.
I've wondered if the microscopic foods they need when fry aren't on offer at the fishfarms, and if the fish we're getting in North America are physical wrecks as a result.
When you look at the tiny mouths on adults, it's hard to imagine how small they must be for newly hatched fry.
According to the guys at ANGFA, they need green water for the first few weeks after hatching. They have tiny mouths and can't take anything bigger than single celled algae or boiled egg yolk pushed through a handkerchief and added to water.
There are 3 colour forms that are naturally found in the wild.
1) plain grey and not much colour are from Cape York in Queensland.
2) yellow from is from the Northern Territory.
3) red form is from New Guinea.
These 3 forms are all primarily grey with black dorsal fins, but they show the red or yellow in the fins. The Cape York variety was the most commonly found in captivity for decades but when the fish were discovered in New Guinea (PNG), they were more popular due to having more colour. Some of the fish from Cape York do have a small amount of red but nothing like the fish from PNG.
They do best in groups of 10 or more and adults need small foods and don't take a lot of dry food.
They are normally found in soft acidic water that is tannin stained and slow moving. Most fish found in Australia are found in billabongs (small lakes).
More info can be found at the following link.
rainbowfish.angfaqld.org.au
There are 3 colour forms that are naturally found in the wild.
1) plain grey and not much colour are from Cape York in Queensland.
2) yellow from is from the Northern Territory.
3) red form is from New Guinea.
These 3 forms are all primarily grey with black dorsal fins, but they show the red or yellow in the fins. The Cape York variety was the most commonly found in captivity for decades but when the fish were discovered in New Guinea (PNG), they were more popular due to having more colour. Some of the fish from Cape York do have a small amount of red but nothing like the fish from PNG.
They do best in groups of 10 or more and adults need small foods and don't take a lot of dry food.
They are normally found in soft acidic water that is tannin stained and slow moving. Most fish found in Australia are found in billabongs (small lakes).
More info can be found at the following link.
Melanotaeniidae and Pseudomugilidae
A website dedicated to Rainbowfishes of Australia and New Guinea
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