Basslets and Dottybacks: Small Fish with Big Colour

Few marine fish deliver as much colour per centimetre as the basslets and dottybacks. Both groups are compact, hardy, and comfortable in modestly sized reef tanks, which suits the space constraints many Indian hobbyists work with in apartment living. They also share a habit of claiming a cave or crevice as home base and defending it fiercely, so their placement in a tank needs a little thought.

The Royal Gramma and the Orchid Dottyback are frequently compared to each other because they are similarly sized, similarly priced, and both favour purple tones. They are not, however, interchangeable in temperament, and keeping the difference straight will save a lot of frustration.

Royal Gramma

The Royal Gramma (Gramma loreto) carries a striking two-tone body, vivid purple at the front blending into gold towards the tail, with the two colours meeting in a scattering of small dots unique to each fish. It is one of the most dependable, disease-resistant fish available in the marine trade and a genuine staple for first reef tanks in India.

Care essentials

• Tank size: A single fish is comfortable from about 115 litres upward, with dense rockwork and caves. A true pair needs closer to 190 litres, and a small group calls for 375 litres or more to avoid constant squabbling.
• Adult size: Around 8 cm.
• Diet: Takes a broad mix of frozen mysis, brine shrimp, and quality marine pellets without fuss.
• Temperament: Generally calm towards unrelated species but territorial about its chosen cave. It will often swim upside down while sheltering under an overhang. This is completely normal cave-orientation behaviour and not a sign of illness.
• Tank note: A confirmed jumper, especially in the first week after introduction. A tight-fitting lid or cover is essential.

Orchid Dottyback

The Orchid Dottyback (Pseudochromis fridmani) is a solid, unblended purple from nose to tail, distinguishing it at a glance from the two-tone Royal Gramma. It hails from the Red Sea and is now bred in captivity in large numbers, which makes it an easy species to source responsibly.

Care essentials

• Tank size: A minimum of around 115 litres, with generous rockwork for a bolt-hole.
• Adult size: Roughly 6 to 7 cm, slightly smaller than the Royal Gramma.
• Diet: A varied carnivorous diet of frozen mysis, brine shrimp, marine pellets, and the occasional live food keeps its colour at its brightest.
• Temperament: Considerably more assertive than its size suggests. It will defend territory against fish several times its size and should never be kept with another dottyback, a similarly coloured basslet, or anything small enough to be viewed as a snack.
• Compatibility warning: Keep only one Orchid Dottyback per tank unless the system is very large, since two of the same sex will fight to the death in confined quarters. Never house it with a Royal Gramma in anything under a large system, as both are purple cave-dwellers that will compete for the same territory.

For Indian reef keepers choosing between the two, the practical rule is simple: pick the Royal Gramma for a calmer community tank, and reserve the Orchid Dottyback for a tank where its tank mates can hold their own. Do not keep both together in a small aquarium.

Article content © S Vejay Anand. All rights reserved.