Colorado River Toad Overview
Colorado River Toad can tolerate temperatures from 65F to over 85F, but ideally are kept slightly warmer than room temperature, from the mid to high 70s. A low-wattage basking spot can help to elevate temperatures into a safe range.
In the wild, precipitation and humidity fluctuate based on season, with a light rainy season in the early part of the year. Colorado River toads can handle a wide range of humidity levels but prefer humidity levels around 40-60% with plenty of ventilation/air movement.
Moist, stagnant air is a big no-no when keeping older Icilius alvarius, while very young animals dry out easily and prefer an elevated humidity. Routine misting and a full screen top will aid in providing proper humidity levels. Colorado River Toads handle short periods of low humidity much better than most tree frogs.
Size of Colorado River Toad
Adult Colorado River toads are quite large, and there is sometimes a size difference between males and females. An adult male may reach between 4-6 inches, but most will be closer to the 6″ mark. A large female will be larger and bulkier than a male, and may measure up to 7.” All of the Colorado River Toad toadlet are well started juveniles, and measure about 1″ long. When they come out of the water they are typically just under 1/4″ long but can be larger.
Colorado River Toad Livespan
There isn’t any good data surrounding the average lifespan of Colorado Toads, but wild caught animals have lived in captivity for 5 or more years. Due to the size and maturation rate likely being at least 2 years, Colorado River Toads can likely live in captivity for over 10 years, although there are reports of toads living to 20. All Colorado River Toads for sale at Buy Reptile Onlinw are well started juveniles, and are 2-3 months old.
Colorado River Toad Feeding
Colorado River Toads really like to Burrow, and often times spend a lot of time underground during the day under hides or cork flats/tube and tend to be more active at night. You should plan your feeding times accordingly. Colorado River Toads can eat rather large food, and easily consume adult crickets and roaches as adults.
We feed our adult Colorado River toads primarily adult crickets, as well as Blaptica dubia roaches, and the occasional superworm, waxworm, or hornworm. Young Colorado River Toads start life feeding on springtails. At the size we sells captive bred Colorado River toads, they are eating 1/8″ to 1/4″ crickets. All prey items should be dusted with a quality vitamin/mineral supplement.
Sexing
Sexing adult Colorado River Toads is quite easy when you know how to do it. Once the toads are about 10-12 months old, they display subtle sexual dimorphism. Females are a bit larger then males, and more rotund. Males are a bit smaller, more slender, and emit a release call when grabbed around the belly. Males will also have a dark nuptial pad and robust forearms to facilitate in amplexus. Color variations exist between individuals, but do not seem to be tied to sexual dimorphism. A Colorado River toad’s call is very loud and hard to miss!
Color/Pattern
Colorado River Toads are a fairly uniform species. Their coloration is typically an olive green to grey with varying amounts of bronze spotting. Ventrally, their coloration is lighter. Tips of the fingers are usually black or dark brown. There are white spots at each end of the mouth.
Social Behavior of Colorado River Toad
These toads are not outwardly aggressive towards each other, and do great when housed in groups. We have not seen any aggression between males or females in our adult group of over 10 animals. During breeding, males can and will amplex without discretion and sometimes even end up with multiple males amplexing a single female. As long as the individuals are able to keep their heads above water, this behavior is not harmful but, for this reason, a male to female ratio of 2-3:1 is recommended for breeding.
Breeding
Captive breeding of Colorado River toads has happened before but with the number of resulting toadlets, it’s not necessary to make this a frequently bred species. Colorado River toads in the wild will breed during the wet seaon with rain being a pretty big trigger. In captivity, the toads seem to need a rain simulation for several hours overnight as well as moving water as they breed in rivers. Colorado River Toad egg clutches average between 7,500-8000 eggs.
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