You're deffinetly on the right track, keep on thinking. The more you know before you purchase the frogs the better. The combination of bright colors, interesting behavior and being diurnal make them one of my favorite animals to keep. Most of the information you're looking for can be at the following websites:
http://www.doylesdartden.com/
http://www.pumilio.com/husbandry.htm
http://www.poison-frogs.nl/
http://www.saurian.net/htm/info_setupsupplies.htm
As you dig through all of the information online you'll find many oppinions about different ways of caring for dart frogs. There are as many individual techniques and tricks as their are dart frog hobbyists and I'm sure you too will develope some of your own once you start keeping them. Don't get confused when reading about all of the different ways of keeping them, just take a step back and think about what the real purpose of doing something a certain way would be and decide for yourself what is more practical.
Dendrobates auratus are hardy dart frogs that aren't very expensive. Many forms are shy which can be disapointing
if they are your first frog. The Costa Ricans that I've cared for seem to be very bold but many of the other color forms are shy. Dendrobates leucomelas, azureus, tinctorius or Phyllobates terribilis might be a better choice since they are generally bolder and more willing to hop around while you're pearing into their terrarium. A 10 gallon aquarium is adequit for an adult pair of dart frogs although a 15 gallon or 20 gallon will give the frogs more room and will allow more flexibility when it comes to terrarium design. Good luck,
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Devin
devin@amphibiancare.com
www.amphibiancare.com
4.1 Dendrobates tinctorius 'Dwarf French Guiana'
1.1 Dendrobates tinctorius 'Powder Blue'
5.1 Mantella aurantiaca
2.1 Mantella crocea
1.0 Ceratophrys cranwelli
1.0 Bufo americanus
0.0.1 Salamandra salamandra
1.0 Ambystoma tigrinum
0.1 Chamaeleo calyptratus
0.1 Phelsuma dubia
1.0 Uroplatus ebenaui
0.0.1 Chrysemys picta belli
1.0 Terrapene carolina triunguis