What’s New

Finside: Idle Aquarium

Quick fix

Version 0.6.1 · October 30, 2026

• Fixed the game not loading properly when you opened it with a saved game, which left the tank blank and the Shop and Settings unable to open.

Personalities and new friends

Version 0.6.0 · October 29, 2026

• Every betta has a personality now: Hunter, Lazy lounger, Diva, Explorer or Shy. It changes how they swim, eat and what makes them happy. Tap a betta to meet yours.
• African dwarf frogs in olive, brown and gray-green, with a rare golden one to find. They walk the bottom, kick up to the surface for air and sometimes just float there.
• Thai micro crabs, one of the smallest crabs in the world, and safe with most bettas.
• Malaysian trumpet snails in tan, dark brown and banded, with a rare gold. They hide in the gravel by day and come out at night.
• Two new treats: live brine shrimp for fish to chase, and algae wafers for everyone on the bottom.
• A Glowing sign: bigger than the wooden one, in a classic, oval or Vegas-style diamond shape, with marquee bulbs chasing around the edge and letters that light up one by one in the color you pick. [Credit: Julie Kamperides]
• Signs can hang as high or low as you like: tap Move, then drag the sign up or down.
• Four new cats to adopt: a black cat, a calico, a Scottish Fold with folded ears, and a spotted Bengal, a second Legendary.
• Your first cat is your choice now: pick up Cat supplies in the Shop, then adopt any cat you like from the Cats tab.
• Name your cats! Tap Name next to a cat in the Cats tab. With name tags on, a named cat’s name pops up when it comes to the glass. [Credit: Niki Kamperides]
• Crazy cat lady now means all eleven cats. If you’d already earned it, it’s back on your list, and you get the reward again when you finish the set.
• New colors: lavender, copper and black orchid bettas, and snowball and chocolate shrimp. Rare colors turn up a little more often. [Credit: Niki Kamperides]
• Anything new in this version has a pink dot in the Shop, on its section and on the Shop button, until you take a look.
• Earning an achievement is a proper moment now: an Achievement unlocked! card with confetti. Tap it to see the achievement in your list.
• When Jessie finishes walking you through what’s new, the menu she opened closes too.
• Peckish fish can be fed right away. Their card says so, and the countdown shows when they’ll be peckish next. [Credit: Julie Kamperides]

Playtest fixes

Version 0.5.1 · October 29, 2026

• You’ll hear about it when a tank finishes cycling, and Jessie tells you it’s ready for animals. Tap the cycle meter to see when a new tank will be ready.
• Babies, cured fish and other news always get announced, even when a few things happen at once or you were only away a little while.
• Bring back Jessie’s tips now only brings back the tips that fit your tanks right now.
• Jessie’s lights tip Show me now points right at the lights switch.
• Tap your tank’s name to open This tank.
• Swiping to another tank always shows the whole tank, even coming from a small one.
• The Shop opens with every section folded up, and Back from an item takes you to the same spot.
• Zucchini and almond leaves have a Move button on their card.
• Amazon frogbit is easier to spot, with round glossy leaves and long trailing roots.
• Brighter, clearer water, so your fish, plants and room show through better. [Credit: Niki Kamperides]
• The Library has a real standing lamp now, with a brass pole and a drum shade that glows at night.
• Cats sometimes stretch up tall to see over your plants. [Credit: Julie Kamperides]
• The mystery cat costs a bit more, at least 2,500 coins. [Credit: Julie Kamperides]
• A new notification icon on Android that looks like a fish.

Cats everywhere

Version 0.5.0 · October 27, 2026

• Cats now visit every tank, whatever room it’s in, even a plain wall. Adopt your first cat in the Shop.
• The Cat room is now the Den, with a cat bed where you’ll sometimes find a cat curled up asleep. If you had the Cat room, the Den is yours and so are your cats.
• A hanging sign for your tank, with your own words on it. Tap it to change what it says. [Credit: Julie Kamperides]
• Try it: see plants, decorations and gravel in your tank before you buy them. [Credit: Julie Kamperides, Niki Kamperides]
• Swiping between tanks now slides smoothly and follows your finger. Let go partway and it settles on whichever tank is showing more.
• Full view: tap the arrows under the Help button to clear away every button and see just your tank. Tap anywhere to bring them back.
• Cats cost a bit more to adopt, starting at 1,500 coins for the orange tabby.
• A new achievement for cat lovers: Crazy cat lady. Adopt every cat.
• Jessie’s Show me buttons now point right at the thing you need, step by step, and her tips have Show me buttons too.
• Stuck? Settings has a new How do I…? guide, with a Show me for almost everything.

Storage and swipes

Version 0.4.0 · October 27, 2026

• Storage! Tap Store on any plant or decoration, then place it in any of your tanks from the Tanks tab. Moving to a different tank takes a quick rinse for decorations and a quarantine for plants. [Credit: Julie Kamperides, Niki Kamperides]
• Tap an animal to see how many coins it earns an hour. Rare ones earn four times as much. [Credit: Niki Kamperides]
• Zoomed out, you can still collect from the chest and tap the buttons under it. [Credit: Julie Kamperides]
• Zoomed out to the whole tank, swipe left or right to visit your other tanks. [Credit: Julie Kamperides]
• Tapping your coins now shows what’s earning. Collect coins from the chest in the tank.
• Lights on at night now glow down from the hood and leave the corners dark, like a real tank at night.
• A new room: the Library, with tall bookshelves and a reading lamp.
• Rooms cost more now, since they’re for keeps and work for every tank. Rooms you already have stay yours, and unlocking them all pays more.
• New babies wear a little tag the first time you see them.
• You’ll hear about it when a sick fish gets better.
• Swipe a card down to close it.
• A few new notifications: when something in storage is ready, when you can afford a bigger tank in your first week, and a friendly hello if you’ve been away a few days.
• The first time you store something, Jessie shows you where storage is. She’ll also let you know when something there is ready.
• When Jessie talks while a menu is open, the menu makes room for her instead of hiding under her.

Right on time

Version 0.3.1 · October 27, 2026

• Your tank’s clock now always matches your phone’s, even after a long break, a daylight saving change or a trip across time zones. Nothing grows or ages any differently.

Lights and little helpers

Version 0.3.0 · October 25, 2026

• Tank lights come in six colors. Find them in the Shop under Lights. [Credit: Julie Kamperides]
• Turn the lights on at night from This tank. They stay on through the next day, then switch off by themselves. Leave them on all night and your fish get tired.
• Name tags: show names over your animals, or just the ones you named. It’s in Settings. [Credit: Julie Kamperides]
• Pick how lively the filter bubbles look, in Settings. [Credit: Julie Kamperides]
• Snails and shrimp eat more algae now, and the Water tab shows how much they’re helping.
• Tap an achievement to see how to earn it. The coins are your reward. [Credit: Julie Kamperides]
• Rock ledges have a spot in the middle, and they tell you when something won’t fit. [Credit: Julie Kamperides]
• Expand all and Collapse all are always at the top of the Shop.
• This card! The website has every release’s notes too.

Fixes from playtesting

Version 0.2.1 · October 24, 2026

• Notifications are much more reliable, especially on Android.
• Time away always counts, even when your phone pauses the game without closing it. [Credit: Niki Kamperides]
• A new heads-up when the water is dirty enough to make fish sick.
• Red dots only show for tanks that really need you, and the dots by the tank name show which tank you’re looking at.
• Little arrows on the menu tabs show when there are more to scroll to.
• Almond leaves and zucchini slices can be moved. Press and hold, then slide. [Credit: Niki Kamperides]

Twenty gallons

Version 0.2.0 · October 23, 2026

• A 20 gallon tank, with showpiece fish like the dwarf gourami, cockatoo dwarf cichlid and paradise fish.
• More fish: bristlenose pleco, Bolivian ram, cherry barb, rummynose tetra, pea puffer and honey gourami.
• New plants, including Monte Carlo and a CO2 system to grow them.
• Magnetic rock ledges, and plants that grow on wood and rock.
• Detailed new art for every animal, plus color varieties for bettas, shrimp and snails.
• Little icons show who’s hiding in a cave.
• Trim plants and sell the cuttings. Trimmed plants grow back bushier.
• Double-tap to zoom, a help button, and a tidier Tanks tab.

First splash

Version 0.1.0 · October 21, 2026

• Start with a 1 gallon tank and grow up to 10 gallons, with Jessie to show you the ropes.
• Real fishkeeping, simplified: cycle the tank, keep the water clean and feed your fish.
• Fish, shrimp and snails with moods, babies and rare colors.
• A treasure chest that fills with coins while you’re away, achievements, rooms and cats.
• Notifications when your tank needs you.