Turquoise Rainbowfish – Melanotaenia lacustris

Turquoise Rain­bow­fish – Melan­o­tae­nia lacus­tris is a beau­ti­ful, peace­ful fish with an endear­ing per­son­al­i­ty. It is the larg­er species of the Rain­bow­fish. They have con­stant­ly chang­ing col­or­ing, how­ev­er, always fea­ture beau­ti­ful col­ors. These qual­i­ties make the Lake Kutubu Rain­bow­fish one of the most amaz­ing fresh­wa­ter fish in the hobby.

Com­mon Name: Turquoise Rainbowfish

Sci­en­tif­ic Name: Melan­o­tae­nia lacustris

Typ­i­cal Adult Fish Size: 8 – 10 CM

Nat­ur­al Habi­tat: South­east Asia, Thailand

Ide­al Tank Ecosys­tem: Turquoise Rain­bows are a very pop­u­lar aquar­i­um fish, and have lit­tle require­ments. A peace­ful com­mu­ni­ty aquar­i­um. Rain­bows would ide­al­ly be in a plant­ed tank. When hous­ing Turquoise Rainbow’s in cap­tiv­i­ty, it is impor­tant to pro­vide them with a longer sized aquar­i­um that has a selec­tion of plants and plen­ty of room for these guys to mean­der about the tank. They are also well known jumpers, ther­fore rec­om­mend their aquar­i­um should be ful­ly cov­ered to pre­vent them from jump­ing out of the aquar­i­um if they get startled.

Rec­om­mend­ed Aquar­i­um Capac­i­ty: 55 gal­lon / 240 litre

Species Com­pat­i­bil­i­ty: Peace­ful com­mu­ni­ty tank mates Molly’s, Gup­pies, Platy and Tetra’s.

Aquar­i­um Water Tem­per­a­ture: 23 – 32°C / 73 – 89°F

Aquar­i­um Water pH: Range pH 4.5 – 7.5

Feed­ing: The Turquoise Rain­bow­fish should be fed once or twice a day. All food should be con­sumed after just a few min­utes. A flake food diet is a good base for the Rain­bow, how­ev­er it is bet­ter to be sup­ple­ment­ed with live food. Your Rain­bow will sur­vive on flake food alone, but the live food makes the Rain­bow thrive. Frozen or live brine shrimp are pop­u­lar Rain­bow fish foods because brine shrimp is sim­ple to pro­duce at home. Blood­worms, micro worms, fruit flies, mos­qui­to lar­vae, daph­nia and diced Earth­worms are oth­er exam­ples of suit­able food for your Turquoise Rain­bow­fish – Melan­o­tae­nia lacustris.

Sex­ing: Males are brighter col­or­ing than females but only slight­ly brighter col­or most of the time. When in breed­ing mode the alpha male, dom­i­nant male, will bright­en up to a stun­ning tone of elec­tric blue and his fore­head will shade to yel­low. This yel­low on his fore­head will reflect to attract the females.

Breed­ing: Rainbow’s deposits its eggs in veg­e­ta­tion or oth­er suit­able sub­strate with moss­es like Java moss. It’s best spawned in a pair or group com­pris­ing a sin­gle male and two or three females in a larg­er tank.

Females are capa­ble of dis­trib­ut­ing many eggs per day. The adults can be added to the spawn­ing tank and left in place for a week or so, or until the first fry are noticed. You can also check the sub­strate dai­ly for eggs. Then the eggs can care­ful­ly be removed man­u­al­ly. Males can be aggres­sive in their chase to find a female. Pro­vid­ing a num­ber of sol­id cov­er using large-leaved plants or wood like driftwood,Manzanita, pet­ri­fied wood, will encour­age safe­ty for the fish and reduce stress levels.

Oth­er Con­sid­er­a­tions: Ensure that your fresh­wa­ter fish aquar­i­um is cycled before adding these fish.

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