Hi,
Great pictures, thanks for posting them! I'm going to answer your questions out of order and kind of randomly so you might have to scroll around a little...
You have two awesome looking painted mantellas, either Mantella madagascariensis or M. baroni. The beautiful mantella, M. pulchra, has a similar pattern but the colors are generally less vivid on the legs and your mantella frogs have bright orange/red legs. The best way to tell the two apart is by their size. M. pulchra is smaller with large females only growing to an inch in length. To figure out which species of painted mantella you have (madagascariensis or baroni) look at the inner thigh of your frogs. Madagascariensis will have bright red flash marks while baroni will have just solid orange legs.
Mantella frogs need to be kept cool. Idealy the highest temperature in the terrarium during the day would be 78F but it would be better if you could keep them a bit cooler. When they are kept to hot the little frogs will hide all day in the coolest part of the cage and refuse to feed. If there is no cool space to hide mantella frogs die quickly. I lost my first golden mantella frog because the temperature in its cage stayed at 78F for a few days and there was no cool place for the frog to hide.
The best way to tell male mantella frogs from females is to listen. Adult male frogs will call. Males are also usually smaller and have a slender look while females grow larger and have a plump round look.
A 10 gallon aquarium will be large enough for two adult frogs. Provide lots of cool moist hiding spots and place for the frogs to take cover under like clumps of moss, dead leaves and cork bark.
A diet of only crickets will keep the mantella frogs alive. It is important to have a back up food source or two for your frogs incase your crickets die or can't be shipped due to cold weather. Flightless fruit flies are very easy to culture and are not as troublesome as most people think they are. Other food items to offer are termites, rice flower beetle larvae, springtails and small insects collected from the wild. Offering many different food items will keep your frogs healthier than if you just offered one type.
As far as care sheets go here are a few sites:
http://www.amphibian.co.uk/
http://www.easyamphibians.co.uk/mantella/index.html
http://www.amphibiancare.com/frogs/goldenmantella.html
Good luck with it all,
-----
Devin
devin@amphibiancare.com
www.amphibiancare.com
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5.1 Mantella aurantiaca
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0.1 Hyla chrysoscelis or versicolor
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0.0.1 Salamandra salamandra
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0.1 Chamaeleo calyptratus
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0.0.1 Chrysemys picta belli
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