Bicolor Dottyback
The Bicolor Dottyback (Pictichromis paccagnellae) is commonly mistaken for the Royal Dottyback or False Gramma, a nod to its striking resemblance to the much more peaceful Royal Gramma (Grammaloreto).
This small but bold fish is easily recognized by its distinct two-tone coloration: a vibrant magenta-purple covering the front half of the body, abruptly transitioning to a bright yellow rear half and tail. Native to the Indo-Pacific, it is an excellent and hardy choice for aquarists of all experience levels, provided its feisty temperament is understood.
Reaching a maximum adult size of only 3 inches (7-8 cm), the Bicolor Dottyback is suitable for a minimum tank size of 30 gallons. It requires plenty of open space, strong water flow, and a well-maintained environment to thrive.
| Specification | Value |
|---|---|
| Scientific Name | Pictichromis paccagnellae |
| Adult Size | 3 inches (7-8 cm) |
| Minimum Tank Size | 30 gallons |
| Origin | Indo-Pacific |
| Temperament | Feisty, aggressive toward similar species |
FAQ
What is the difference between Bicolor Dottyback and Royal Dottyback?
The Bicolor Dottyback has a distinct two-tone coloration—magenta-purple on the front half and bright yellow on the rear—while the Royal Dottyback is typically a uniform yellow with a dark spot. They are often confused due to similar appearances, but the Bicolor Dottyback is more active and aggressive.
Is the Bicolor Dottyback suitable for beginners?
It is hardy but not ideal for beginners due to its feisty temperament. It requires a well-maintained tank with strong water flow and compatibility with non-aggressive species.
What kind of tank conditions does it need?
A minimum of 30 gallons with strong water flow, stable water parameters, and plenty of open swimming space. It prefers a well-filtered, tropical marine environment.
Charles Marshall –
I bought this fish for my 40-gallon tank and it’s been thriving for six months. The coloration is stunning—magenta front and yellow back. It’s active and needs space, so I made sure to keep it with peaceful fish. Not for a small tank, but worth it if you have the right setup.
Joshua Simpson –
The fish looks beautiful and matches the description perfectly. I noticed it’s more active than other dottybacks and doesn’t tolerate other small fish well. I now keep it alone in a spacious tank with good flow.
Joan Mills –
It’s colorful and shows off well in the tank. However, it’s not as calm as I expected. I had to remove a small shrimp that was near it. It’s a good choice if you’re prepared for a more active fish.