
Aqua+ Betta — Living Aquarium
A betta fish in your pocket
0 ratings
Free
In-App Purchases
Rating summary
About
Aqua+ Betta is a living aquarium in your pocket: an interactive crowntail betta fish (Betta splendens).
TWO WAYS TO WATCH IT
• Contemplative mode: set your phone down and let it be. The betta explores its tank, rises to breathe at the surface and builds its bubble nest under a leaf. Perfect for unwinding for a few minutes, on a desk or a bedside table.
• Interactive mode: touch the glass and it swims over to you. Tap to feed it. Show it its reflection in the mirror: it flares its fins and displays, then calms down on its own.
• Natural behaviours: curiosity, flaring, breathing at the surface, bubble nest, feeding
• Sunlight filtered through the surface, with caustics dancing over the fish and the tank floor
• Dark water that turns amber in the depths, just like a real tank
• Tilt your device: the water sloshes, bounces off the glass and sends waves across the surface that carry the fish along
BETTA+
The app is free. Betta+, available as an in-app purchase, unlocks everything else:
• All four colour forms: Copper, Samurai, Koi, Wild
• The Studio: design your own fish (colours, fin shape, double tail, patterns…), paint it with your fingertip, name it and share it with friends
• Decor: grass, anubias, java fern, moss ball, pebbles and driftwood on a sandy bed, arranged with your finger
• An aquarium that changes colours through the day
A question or an idea? Write to us at contact@mostah.com.
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What's New in Aqua+ Betta
1.1.1
November 3, 2026
Bug fixes and performance improvements.
1
Subscriptions & In-App Purchases
$1.99
Premium
All colour forms, the Studio and tank decor.







