Characteristics:
Great beginner frog
Mint Green
Bold
Easy to breed
Loud call
Large
Can be kept in groups
 
Recommended Vivarium Size: At least 10 gallons per frog, recommended 24x18x18 for 1-3 frogs.
 
Temperature: Range of 65 F to 80 F, but prefer temperatures in the low to mid 70s. Temperatures over 80 F are dangerous.  Phyllobates are more sensitive to warmer temperatures and standing water.
 
Humidity: Range of 70 – 100%, but can tolerate humidity down to 50% for short periods of time if the frogs have access to water. Low humidity levels, especially without access to water, can quickly be fatal.
 
Size: Adult female terribilis are larger, measuring approximately 2 inches. Male terribilis are a bit smaller, averaging about 1.75 inches at maturity. 
 
Life-Span: Mint Terribilis are capable of living well over 20 years in captivity under ideal conditions, although a lifespan of 10 years is more common.
 
Feeding: Mints eat Drosphilia Hydei or Drosphilia Melanogaster fruit flies.  Mints will also eat pinhead crickets, springtails and isopods.  All feeder insects should be dusted with supplements.
 
Sexing: Phyllobates Terrbilis 'Mint' can be more difficult to determine sex. Male 'Mints' are easier to identify due to a loud call that can start between 8 and 10 months of age.  Male 'Mints' vocal sacks will also be more predominant due to the calling and stretching of the skin.  Females will tend to be larger than males.  Finn's Frog Farms sells unsexed juvenile frogs, least three months out of the water.  
 
Color/Pattern: Mint Terribilis are almost identical to other mints.  When young, mint terribilis some out of the water mostly black.  As the frogs mature the black coloring will disappear and the frog will be a beautiful mint color.  The nostrils, mouth, and toes will stay black.
 
Social Behavior: These frogs do well housed in groups up to sexual maturity, as long as enough space is provided. As they reach sexual maturity at 18-24 months of age, the social dynamic in a group of Phyllobates Terribilis 'Mint' may change.  Female 'Mints' may wrestle and eat each other's eggs.  It may be best to separate frogs into male/female pairs.  Finn's Frog Farm strongly recommends against housing different species/morphs of dart frogs. 
 
Breeding: Phyllobates terribilis Mint are very simple and easy to breed once they start. Sometimes it can take 2-3 years to begin. Generally, eggs are deposited on a smooth broad leaf, or on a petri dish under a cocohut. The eggs hatch into tadpoles, which then take 60-90 days to complete metamorphosis into miniature versions of the adults.