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Name: Dendrobates tinctorius 'Robertus'. Named for the exporter Jan Henzen whose middle name is Robertus. Commonly called the Dyeing Poison Dart Frog (based on an early belief that natives used brightly colored frogs to dye fabric).
Temperature: They can tolerate a temperature range of 65 F to 80 F, but prefer temperatures in the low to mid 70s. Temperatures over 85F are dangerous.
Humidity: Like most poison dart frogs, Robertus prefer a 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 Robertus are larger, measuring in at approximately 2 inches. Male Robertus are a bit smaller, averaging about 1.75 inches at maturity. All of the Dendrobates tinctorius 'Robertus' froglets Josh's Frogs sells are well started juveniles, and measure approximately 5/8” long.
Age: Dendrobates tinctorius 'Roberus' is capable of living well over 20 years in captivity under ideal conditions, although a lifespan of 10 years is more common. In the wild, it is thought that Robertus may live 4-6 years. All Robertus for sale at Josh's Frogs are well started juveniles, and are 2-3 months old.
Feeding: Like most poison dart frogs, Robertus prefer smaller foods. All of the Robertus Josh's Frogs sells will readily eat Drosophila melanogaster fruit flies. Adult Dendrobates tinctorius 'Robertus' will readily consume Drosophila hydei fruit flies and pinhead crickets. All ages of poison dart frogs will enjoy springtails and isopods. All feeder insects should be dusted with a vitamin/mineral supplement. For more information on what poison dart frogs can eat, please visit our How-To Guide on Feeding Poison Dart Frogs.
Sexing: Dendrobates tinctorius 'Robertus' is not sexable until 10-12 months of age. Male Robertus tend to be smaller than females, which often appear both longer and wider. Males also tend to have wider front toe pads and a less defined back arch than females. Josh's Frogs sells 2-3 month old juveniles that are not sexable unless otherwise noted. For more information on sexing poison dart frogs, please visit our How-To Guide on Sexing Poison Dart Frogs.
Color/Pattern: Robertus are mostly blue, black, and yellow in color. The blue is typically a very dark, deep blue and always located on the legs and underbellies. Yellows tend to be isolated to the dorsal stripes and the sides. Josh's Frogs does not recommend, support, or endorse line breeding as we believe this leads to weaker captive animals and nature has done a wonderful job of creating an amazing variation in color and pattern of poison dart frogs already.
Social Behavior: These frogs do well housed in groups up to sexual maturity, as long as enough space is provided. Josh's Frogs recommends approximately 10 gallons per frog. As they reach sexual maturity at 10-12 months of age, the social dynamic in a group of Dendrobates tinctorius may change, and all but one female may need to be removed. Female D. tinctorius may fight with each other over a mate. For that reason, many breeders recommend keeping Robertus in pairs as adults. Josh's Frogs strongly recommends against housing different species/morphs of dart frogs - for the health of your pets, please avoid mixing! Josh's Frogs recommends purchasing multiple frogs if you are interested in breeding them – this greatly increases the chances of getting a pair.
Breeding: Robertus are very simple and easy to breed. Like most Dendrobates tinctorius, Robertus are best bred in pairs as adult females may fight with each other in the presence of a male. 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 60-80 days to complete metamorphosis into miniature versions of the adults. For more information on breeding and raising poison dart frogs, please visit our How-To Guide on Breeding Poison Dart Frogs.
Natural Range: Dendrobates tinctorius 'Robertus' is native to southern Suriname. An exact locale is unknown.
History in the Hobby: Robertus have been around for a relatively short time in the US hobby, having originally been imported in the 1990s. While an exact locale is not known, this has long been a popular frog in the hobby.
Still not sure if Dendrobates tinctorius 'Robertus' from Josh's Frogs are the right poison dart frog for you? Read the reviews below and see what other customers are saying!
After placing an order containing a live animal, you will receive a scheduling email containing our JotForm scheduling link to schedule your new pet's delivery date.
With this scheduling link, you will be able to schedule your order's delivery up to 30 days in advance. You will be able to choose a date of delivery for Tuesday-Saturday (Saturday arrival depends on the carrier's service availability) with the estimated time of arrival generally being 12pm, or 4:30pm for more rural areas. Overnight lows must be above 40°F to ship directly to you (or above 30°F for FedEx Ship Center pickups) as well as below 90°F by estimated time of arrival.
If you require further assistance, or prefer to talk to one of our Customer Service agents, please feel free to reach out to our [email protected] email or our phone line 1-800-691-8178.
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Purchased three of those beautiful frogs. They are absolutely beautiful, with a wonderful color pattern. They are very bold and such a joy to watch.
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