Golden Wonder Killifish (Aplocheilus lineatus)

The Golden Wonder Killifish (Aplocheilus lineatus) is one of the most visually striking and behaviorally unique fish you can add to an aquarium. With its metallic gold body, bold horizontal striping, and constant surface activity, this species brings a level of movement and presence that most community fish simply don’t offer.
At Magnolia Aquatics Company, our Golden Wonders are home-raised in a controlled fishroom environment, producing fish that are not only vibrant in color but also hardy, well-adjusted, and aggressively feeding from day one.
🏅 Premium Home-Raised Stock
• Raised in our home fishroom — not mass-imported
• Strong, healthy, and fully acclimated
• Active, alert, and feeding confidently
• Quality over quantity — always
About the Species
Native to South and Southeast Asia, Golden Wonder Killifish are surface-dwelling predators that naturally occupy the top layer of the water column. Their upturned mouths and streamlined bodies are built for hunting, making them both fascinating to watch and highly functional within an aquarium ecosystem.
Unlike many fish that hide or stay mid-water, these fish are always visible, actively cruising the surface and responding to movement outside the tank — quickly becoming one of the most interactive species you can own.
Color, Size & Presence
Golden Wonders develop a brilliant gold sheen with distinct horizontal striping that becomes more pronounced as they mature.
• Adult Size: 3–4 inches
• Body Type: Long, torpedo-shaped
• Coloration: Metallic gold with dark lateral striping
• Visual Impact: High — especially in top-level viewing zones
👉 These are showcase fish — not background fillers.
Behavior & Compatibility
Golden Wonder Killifish are peaceful toward similarly sized fish but opportunistic predators by nature.
• Best kept with medium-sized or larger tank mates
• Will eat small fish, shrimp, and fry
• Generally non-aggressive toward equals
• Can be kept singly, in pairs, or small groups
Their behavior makes them ideal for hobbyists who want a natural balance between beauty and function.
Tank Requirements
These fish are extremely hardy but thrive best in a properly set up environment:
• Temperature: 72–80°F
• pH Range: 6.0–7.5
• Tank Size: 20 gallons minimum
• Water Level: Mid to top swimmer
• Lid Required: Yes — strong jumpers
Adding floating plants or surface cover can help them feel secure while enhancing their natural behavior.
Feeding
Golden Wonders are enthusiastic eaters and will readily accept a wide range of foods:
• High-quality pellets and flakes
• Frozen foods (bloodworms, brine shrimp)
• Live foods (insects, larvae, small feeders)
Their strong feeding response makes them easy to maintain and a great choice for hobbyists at any level.
Breeding Overview
Golden Wonder Killifish are egg layers that scatter their eggs among plants or spawning material.
• Eggs are typically laid in floating plants or mops
• Adults may consume eggs or fry if left together
• Fry grow quickly with proper feeding
While not difficult to breed, they are most often kept for their display value and behavior.
Why Buy From Magnolia Aquatics Company?
We don’t move volume — we build quality.
Our fish are raised with care, consistency, and attention to detail so that when they arrive, they are ready to thrive in your aquarium — not recover from shipping stress or poor conditions.
When you purchase from us, you’re getting fish that are:
• Already adapted to aquarium life
• Properly fed and conditioned
• Selected for health, color, and activity
Golden Wonder Killifish bring energy, visibility, and personality to the one area of the tank most fish ignore — the surface.
If your tank feels like it’s missing something, this is the fish that fills that gap instantly.
Magnolia Aquatics Company — Where quality comes from home.