Fishes / Breeds
Gobies make up the largest family of marine fish in the world, and a good number of the species that show up regularly in Indian saltwater aquarium shops belong to it. They are small, bottom dwelling,
Gobies make up the largest family of marine fish in the world, and a good number of the species that show up regularly in Indian saltwater aquarium shops belong to it. They are small, bottom dwelling, endlessly watchable, and several species have struck up genuine partnerships with other reef animals that are worth understanding before you buy. Most gobies are also enthusiastic jumpers, so a tight fitting lid or mesh cover is not optional for this group, whichever species you choose. Below is a breed by breed look at seven gobies commonly available to Indian reef keepers, along with what each one actually needs to do well in a home tank.
The Yellow Watchman Goby is golden yellow with pale blue speckles and permanently alert, slightly bulging eyes, growing to around 10 centimetres. Its biggest draw is the relationship it forms with pistol shrimp of the genus Alpheus. The nearly blind shrimp digs and maintains a shared burrow while the goby stands guard outside, and the shrimp keeps an antenna resting on the goby's tail at all times so it can retreat the instant the goby signals danger with a flick. This species is found across the Indo-Pacific, including the eastern reaches of the Indian Ocean.
A single Yellow Watchman Goby does fine in a 40 litre tank, though 120 litres or more is better if you plan to keep a pair or add other fish. Give it a deep bed of sand and rubble to burrow into along with rockwork offering both hiding spots and open ground to watch from. Standard reef parameters suit it well: temperature 24 to 26 degrees Celsius, pH 8.1 to 8.4, specific gravity 1.020 to 1.025. It is peaceful and reef safe, best kept singly or as an established pair, and should not be housed with aggressive tankmates that could bully or eat it. Offer a varied diet of frozen mysis, enriched brine shrimp and chopped seafood two to three times a day. It is a reliable, hardy choice for a first saltwater tank, provided the lid is secure.
The Diamond Goby has a silvery white, elongated body scattered with orange and gold spots that give it its name, and typically reaches around 15 centimetres in aquariums, occasionally more. It is an obligate sand sifter, spending most of the day scooping mouthfuls of sand, filtering out tiny worms and crustaceans through its gills, and spitting the cleaned sand back out. This is a genuinely useful clean up behaviour, but it comes with a real catch that new keepers often miss.
This fish needs a large, mature tank of 200 litres or more with a thick bed of fine sand, at least 10 centimetres, that already carries an established population of microfauna. Add one to a young or overly sterile tank and it will slowly starve over a period of months, since sand alone contains no food value; it is only a tool. Water conditions follow the standard reef range. The Diamond Goby is peaceful with other fish but territorial toward other sand sifting gobies competing for the same patch, and it is reef safe though it will occasionally spray sand over low lying corals. Supplemental feeding of frozen mysis or enriched brine shrimp at least twice daily is necessary even in a well established system. With the right setup it can live five to eight years, but it is not a good match for anyone's first tank.
This species is worth clarifying up front, because shops and even some care sheets use the name Orange Spot Goby loosely enough that it gets confused with the Diamond Goby above; the two share overlapping common names but are genuinely different fish with different lifestyles. The true Orange Spot Goby, Amblyeleotris guttata, has a pale, almost translucent body covered in orange spots outlined in brown, with faint blue markings on the fins, and stays small at around 8 to 10 centimetres. Rather than sifting sand for a living, it is a burrower that forms the same kind of genuine partnership with pistol shrimp seen in the Yellow Watchman Goby: the shrimp digs and maintains the shared burrow while the goby, with far sharper eyesight, keeps watch and flicks its tail to signal danger.
A tank of 115 litres or more with a sandy substrate and loose rubble for burrow building, plus secure rockwork nearby, suits it well. Standard reef parameters apply: temperature 22 to 26 degrees Celsius, pH 8.1 to 8.4, specific gravity 1.020 to 1.025. It is peaceful, shy, and reef safe, and mixes easily with most tankmates, though it will occasionally pick at very small ornamental shrimp unrelated to its own pistol shrimp partner. Feed a variety of mysis, enriched brine shrimp and other small meaty foods once or twice daily. As with every goby in this article, a tight fitting lid is essential, since this species jumps readily when startled.
Several colour forms are sold under the name Clown Goby, including the Yellow or Citron Clown Goby and the Green and Black Clown Goby. All are tiny, stocky fish with oversized round heads, bright solid colouring, and an adult size usually under four centimetres. In the wild they live perched directly on branching coral, especially Acropora, gripping on with pelvic fins modified into small suction pads, and their main defence against predators is a coating of toxic mucus rather than speed.
A tank of 40 litres or more with a colony of branching coral to perch on suits this species well, though it will settle for rocky ledges if no coral is available. Standard reef parameters apply. Clown Gobies are peaceful, can turn territorial with their own species in a small tank, and are best kept singly or as an already established pair. They are reef safe with a small caveat: some individuals nip at Acropora polyps or lay eggs on the underside of a branch, which causes brief tissue recession that the coral typically regrows. Feed small meaty foods such as mysis and enriched brine shrimp; the fish will also graze coral mucus and tiny invertebrates on its own. This is an excellent pick for the nano reef tanks that have become increasingly popular among Indian hobbyists working with compact spaces.
The Neon Goby, most often sold as Elacatinus oceanops, is native to the Caribbean and western Atlantic but is now widely captive-bred and available through the aquarium trade worldwide, including in India. It has a slender dark body with a bold electric blue stripe running from nose to tail, and stays tiny, reaching only around 5 centimetres. In the wild it is a facultative cleaner, picking parasites and dead skin off larger fish, though captive-bred stock does not depend on this behaviour and readily accepts prepared foods.
This is an easy, hardy nano fish suited to tanks of 40 litres and up, kept within standard reef parameters. It is peaceful, gets along with almost everything apart from other gobies or dartfish in cramped quarters, and is completely reef safe. Feed finely chopped mysis and enriched brine shrimp, with small pellets accepted once settled. It is disease resistant and among the easiest true reef fish available, making it a strong candidate for a first marine tank. When buying in India, it is worth confirming with the supplier whether the stock is captive-bred, since most reaching the country now comes from farms in Southeast Asia or the United States rather than wild collection.
Commonly called the Firefish or Fire Dartfish and grouped with gobies in the aquarium trade though technically a dartfish, this species has a white front half fading through yellow into a vivid red rear half, topped with a tall, spike-like first dorsal fin that it flicks constantly, and reaches around 7 to 8 centimetres. It hovers just above the sand near its chosen burrow and darts inside at the first sign of trouble.
A tank of 75 litres or more with a mix of open sand and rocky crevices to retreat into works well, kept within standard reef parameters. This is one of the calmest reef fish available and is peaceful with nearly all tankmates, though two males will fight, so keep it singly or as a male-female pair. It is reef safe. Feed small meaty foods such as mysis and enriched brine shrimp a few times a day, mirroring the tiny drifting plankton it hunts in the wild. An absolutely secure lid is essential, as this species is famous for finding and exploiting the smallest gap when startled. It is a genuinely good choice for a beginner setting up their first community reef tank.
The Purple Firefish shares the posture and habits of the standard Firefish but is coloured white fading through lavender into a deep purple or maroon rear, with a forked tail carrying streaks of red, and grows to a similar 8 to 9 centimetres. It tends to be a touch shier than its orange cousin and appreciates slightly more rockwork to feel secure.
A tank of 75 litres or more, kept within standard reef parameters, suits it well. It is peaceful except toward its own kind and mixes easily with other calm reef fish. It is reef safe. Feed the same small meaty foods offered several times a day. Like the standard Firefish, it is a committed jumper, so a secure lid is non negotiable. It tends to be pricier and less commonly stocked in Indian shops than the standard Firefish, but is worth seeking out from a specialist marine importer for the colour alone.
Article content © Ravi Teja. All rights reserved.
Fishes / Habitat
The scissortail rasbora, Rasbora trilineata, gets its name from the black-and-white banded tail fin, which opens and closes in a scissoring motion as the fish swims, a genuinely visible behaviour rath
2 min read
Fishes / Behaviour
Flushing a fish, whether dead or simply unwanted, down the toilet is a habit many Indian households have inherited without questioning it, and it carries real risks that are worth understanding.
2 min read
Fishes / Getting Started
A cover might seem like an afterthought compared to filtration or lighting, but for a saltwater tank it does real, unglamorous work: cutting evaporation, which matters a great deal given how salinity
2 min read
