Threadfin Rainbowfish (Iriatherina werneri) - Tropical Fish Keeping - Aquarium fish care and resources
 
LinkBack Thread Tools
post #1 of 1 Old 06-13-2013, 07:41 AM Thread Starter
Reference Team
 
Threadfin Rainbowfish (Iriatherina werneri)

Family: Melanotaeniidae, Subfamily Melanotaeniinae

Common Names: Threadfin Rainbowfish

Origin and Habitat: Confined to two populations, one in Western New Guinea and the other in Northern Australia (Allen, 1980). Occurs in slow-flowing or still streams, lagoons, ditches and swamps, in areas of heavy aquatic vegetation including floating plants.

Compatibility/Temperament: Peaceful, but due to its size, flowing fins and sedate manner, it is not recommended for the average community aquarium. Suitable tankmates include the smaller peaceful characins (though fin nipping might be a problem), rasbora, small catfish. Should be kept in a group as the males will frequently display if conspecifics are present.

Threadfin Rainbowfish Diet

Naturally feeds on diatoms and micro-crustaceans. Accepts most prepared foods that are small, and supplemental live or frozen foods like brine shrimp, microworms will benefit. Small foods are required due to their narrow throats.

Size

Males attain 2 inches, females close to 1.5 inches.

Minimum Tank Suggestion

18 inches in length (10 gallon) for a small group of six.

Water parameters for Threadfin Rainbowfish

Soft to medium hard (5-12 dGH), acidic (pH 5.5-7.0), temperature 24-30C/75-86F. Clean, stable water is essential, as this species is highly sensitive to nitrates and changes in pH. Smaller but more frequent water changes may be advisable. Plenty of live plants will also help.

Description

A very beautiful small fish and well deserving of a species aquarium. Water movement must be minimal [note comments on the habitat under Origin], with plenty of plants; floating plants should be provided to shade the light and settle the fish. A dark substrate of fine gravel or sand will further help to calm the fish and bring out their colours. A group of 10 is stunning to look at in a 15 or 20 gallon tank.

Sexes are easily distinguished with males having more and longer black ray extensions on their dorsal and anal fins compared to the females. Threadfin rainbowfish are egg layers and will deposit their eggs among fine vegetation or clumps of Java moss.

H. Meinken described this species in 1974 as the type species for his newly-erected genus; to date it is the only identified living species in the genus. The genus name is Greek, from iris, -idos [= iridiscent] + atherina [= the Greek name of eperlane]. The species epithet honours Werner who first imported the fish to Europe in 1973.

References:

Allen, Gerald R. (1980), "A Generic Classification of the Rainbowfishes (Family Melanotaeniidae)," Records of the Western Australian Museum, 1980.

Meinken, Hermann & W. Foersch (1975), "Iriatherina werneri, a new atherinid fish from New Guinea," in Tropical Fish Hobbyist, volume 4, number 75.

Contributing Members

The following members have contributed to this profile: Byron

Iriatherina%20werneri%201.jpg
Iriatherina%20werneri2.jpg
TFK Team is offline  
Reply
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Threadfin Rainbowfish okiemavis Fish Breeding 1 03-31-2008 12:19 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome