Archer Fish Care Guide: Toxotes Species Surface Hunting Predators
Few freshwater predators captivate quite like the archer fish, a surface hunter that shoots jets of water to knock insects from overhanging branches. This archer fish care guide from Gensou Aquascaping at 5 Everton Park, Singapore draws on over 20 years of hands-on experience keeping Toxotes species in tropical conditions. Native to mangrove estuaries across Southeast Asia, archer fish are well suited to Singapore’s warm climate, though their size, brackish preferences and predatory nature demand thoughtful planning.
Species Overview and Identification
The genus Toxotes contains seven recognised species, but two dominate the aquarium trade. Toxotes jaculatrix, the banded archerfish, grows to around 25 cm and thrives in brackish water. Toxotes chatareus, the largescale archer, tolerates full freshwater better and is the species most commonly found at local fish shops along Serangoon North. Both display silvery flanks marked with dark vertical bars, though the number and thickness of bands differ between species. Juveniles of both species look similar, so ask your seller for a confirmed identification before purchasing.
Tank Size and Setup
Archer fish are active swimmers that spend most of their time in the upper water column. A group of four to five juveniles needs at least a 300-litre tank, and adults require 500 litres or more. Choose a long, shallow aquarium rather than a tall one, as horizontal swimming space matters more than depth. Cover the tank securely with a tight-fitting lid or mesh screen. Archers are powerful jumpers, and an uncovered tank is an invitation for disaster.
Leave generous open water at the surface. Floating driftwood and overhanging plants like pothos trailing from the rim create natural hunting perches without blocking swimming lanes. A sandy substrate works well, especially if you keep brackish-tolerant companions like monos or scats.
Water Parameters and Brackish Conditions
Singapore’s PUB tap water is soft and slightly acidic, which suits pure freshwater Toxotes chatareus after dechlorination. For T. jaculatrix, add marine salt to achieve a specific gravity of 1.005 to 1.010. Use a refractometer rather than a hydrometer for accuracy. Maintain temperatures between 25 and 30 degrees Celsius, which aligns comfortably with ambient room temperature in most HDB flats and condos. Aim for a pH of 7.0 to 8.0 and perform 25 per cent water changes weekly. A powerful canister filter rated for at least twice the tank volume keeps water quality stable for these messy predators.
Feeding and the Famous Water Jet
Archers are carnivores with a strong preference for live food. Crickets, mealworms and small feeder insects placed on a branch above the water trigger their iconic shooting behaviour. In captivity, they also accept frozen bloodworms, krill and high-protein pellets once trained. Start with floating pellets and gradually introduce sinking foods. Feeding two to three times daily for juveniles and once daily for adults prevents obesity without starving growing fish.
Their shooting accuracy improves with practice. Young archers miss frequently, but adults can hit prey from 150 cm away with remarkable precision. Providing live insect targets a few times a week keeps them mentally stimulated and encourages natural behaviour.
Tank Mates and Compatibility
Any fish small enough to fit in an archer’s mouth will eventually become a meal. Safe companions include similarly sized brackish species such as Monodactylus argenteus, Selenotoca multifasciata and larger gobies. In a freshwater setup, robust cichlids, large rainbowfish and medium-sized catfish can coexist. Avoid slow-moving surface dwellers like gouramis, which archers may harass or eat. Keep archers in groups of at least four to spread aggression during feeding.
Health Issues and Common Diseases
Brackish archers are generally hardy, but poor water quality invites bacterial infections and fin rot. Watch for cloudy eyes, frayed fins or white patches. Treat with aquarium salt adjustments and antibacterial medication if symptoms persist. Ich can occur when temperatures drop suddenly, though this is rare in Singapore’s consistently warm climate. Quarantine new arrivals for two weeks before adding them to an established colony.
Breeding in Captivity
Archer fish rarely breed in home aquariums. Sexing is nearly impossible by external appearance, and spawning triggers likely involve seasonal salinity and temperature changes that are difficult to replicate. Most archers available locally are wild-caught or pond-bred at regional fish farms. If breeding is your goal, focus on maintaining a large, stable brackish environment with a mixed group and varied diet, though success remains uncommon even among experienced keepers.
Where to Buy in Singapore
Juvenile archers typically cost $8 to $15 each at local fish shops, with larger specimens fetching $25 to $40. Check the fish farms along Pasir Ris Farmway or shops in the Serangoon North cluster for the widest selection. Online listings on Carousell occasionally offer captive-raised juveniles. Whichever source you choose, inspect fish for clear eyes, intact fins and active feeding behaviour before bringing them home.
Related Reading
emilynakatani
Still Have Questions About Your Tank?
Drop by Gensou Aquascaping — most walk-in questions get answered in under 10 minutes by someone who has set up hundreds of tanks.
5 Everton Park #01-34B, Singapore 080005 · Open daily 11am – 8pm
