How to Aquascape for Peacock Gudgeons: Caves and Colour
Peacock gudgeons (Tateurndina ocellicauda) are among the most colourful small fish available in Singapore, yet many keepers house them in bare tanks that fail to bring out their best behaviour. A thoughtful aquascape for a peacock gudgeon tank provides the caves they need for breeding, the sight breaks that reduce aggression, and a backdrop that makes their iridescent blue and red markings pop. Gensou Aquascaping in Singapore has designed several gudgeon-focused setups, and this guide shares what works.
Understanding Peacock Gudgeon Behaviour
These fish are cave spawners. Males claim a small cavity, display their vivid colours to attract females, and guard the eggs until hatching. Without suitable caves, males become restless and females show subdued colouring. Peacock gudgeons also prefer the lower half of the water column, hovering just above the substrate or perching on hardscape. Your aquascape needs to serve their biology: plenty of horizontal surfaces, small enclosed spaces, and enough territory markers for multiple males.
Tank Size and Shape
A 60 cm x 30 cm x 30 cm tank (roughly 50 litres) houses a group of six to eight comfortably. Longer tanks are preferable to taller ones because gudgeons claim horizontal territories along the substrate. Floor space matters more than water depth. For breeding groups of 10 or more, step up to a 90 cm tank. Keep a ratio of roughly two females per male to spread courtship attention and reduce harassment.
Creating Caves
Caves are non-negotiable for this species. PVC pipe cut to 5-6 cm lengths and half-buried in the substrate makes effective spawning sites. Coconut shell halves with entrance holes drilled to 2-3 cm diameter work beautifully and look far more natural. Ceramic breeding caves designed for Apistogramma fit peacock gudgeons perfectly and cost around $3-5 each on Shopee. Provide at least one cave per male, plus one or two extras, positioned with entrances facing different directions so each male has a private space.
Hardscape Arrangement
Build clusters of rounded stones and small driftwood pieces to create visual barriers between territories. Dragon stone and seiryu stone both work, though darker stone makes the fish colours stand out more dramatically. Arrange hardscape in two or three groupings rather than a single central pile, giving males distinct zones to defend. Leave open sand patches between groupings where fish can display and forage. Fine sand in a natural beige or brown tone shows off the gudgeons’ belly colouring.
Plant Choices That Complement
Low to mid-height plants fill the background without overwhelming the small fish. Cryptocoryne wendtii varieties add texture and the bronze-green leaves complement the fish colouring. Java fern (Microsorum pteropus) attached to driftwood provides overhead cover without rooting in the substrate where caves sit. Floating plants like Salvinia minima dim the light slightly, which encourages gudgeons to come forward and display rather than hide. Avoid dense carpeting plants that block access to cave entrances.
Water Parameters and Temperature
Peacock gudgeons prefer slightly warm, soft water: pH 6.5-7.5, GH 5-12, temperature 24-28°C. Singapore’s tap water sits comfortably within this range after dechlorination. No heater is usually needed given ambient temperatures of 28-30°C in most homes. Gentle filtration from a sponge filter or a small hang-on-back keeps the water clean without creating strong current. These fish are not strong swimmers and dislike turbulent flow across their territories.
Lighting for Colour Display
Moderate lighting under 50 PAR at substrate level is sufficient. Peacock gudgeons show their most vivid colours under slightly subdued conditions rather than intense illumination. A warm-white LED (4000-5000K) enhances the red and blue iridescence on their flanks. Avoid cool-blue LEDs that wash out warm tones. A moonlight mode in the evening reveals different colour patterns as the fish settle in for the night.
Bringing the Aquascape Together
The finished peacock gudgeon tank should feel like a series of small neighbourhoods separated by plant and stone barriers. Each male holds a cave, females move between territories, and open sandy lanes provide display stages. Gensou Aquascaping finds this species rewards the effort of a well-planned layout with constant activity, breeding behaviour, and some of the most beautiful colouring you will see in a nano community tank.
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emilynakatani
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