Akvarist
Sign in

Keep track of your aquarium

Log water and fish, plan your next tank and look up thousands of species.

Get startedExplore the species
  • 4,325 species
  • 18.6M sightings
  • 246 countries
  • 5 languages
my.akvarist.app
An aquarium on a large screen, with its report, activity and fish
An aquarium’s report, with traffic lights for the water and the fish

Water test

Stua, yesterday

Everything suits the 8 species in the tank.

  • Temperature 25 °C
  • pH 6.8
  • Nitrite 0
  • GH 8

Explore 4,325 species

Look up a species and see how it likes to be kept, or let the wall below tempt you. New species every day.

  • 3,589fish
  • 75invertebrates
  • 91corals
  • 570plants

Species of the day

Photo of Ticto barb
FreshwaterBrackish

Ticto barb

Pethia ticto

Temperature14–22 °C
pH6.5–7
Length12.5 cm
TemperamentPeaceful
Photo of Stripey
BrackishSaltwater

Stripey

Microcanthus strigatus

Length16.2 cm
Photo of Gudgeon
FreshwaterBrackish

Gudgeon

Gobio gobio

Temperature2–18 °C
pH7–7.5
Length21 cm
TemperamentPeaceful
Photo of Blyxa
Freshwater

Blyxa

Blyxa octandra

Photo of Sea lettuce
BrackishSaltwater

Sea lettuce

Ulva lactuca

LightMedium
CO₂Not needed
DifficultyEasy
GrowthHigh
Photo of Microsorum pteropus
FreshwaterBrackish

Microsorum pteropus

LightLow
CO₂Not needed
DifficultyEasy
GrowthLow
Photo of Organ pipe coral
Saltwater

Organ pipe coral

Tubipora musica

LightMedium
FlowMedium
DifficultyMedium
Temperature22–26 °C
Photo of Vampire crab
Freshwater

Vampire crab

Geosesarma dennerle

Temperature22–28 °C
pH6.5–7.5
Length4 cm
Photo of Boring Clam
Saltwater

Boring Clam

Tridacna crocea

Temperature22–26 °C
pH8.1–8.4
Photo of Horned nerite snail
FreshwaterBrackish

Horned nerite snail

Clithon corona

Temperature22–28 °C
pH7–8.5
Did you know?

Species from all over the world

The species live wild in 246 countries.

Species per country11,168
See the map in the app

Gathered from researchers around the world

We have gathered, cleaned and pieced together species data from scientific databases all over the world, and translated it into your language, so you do not have to look.

18.6 million

sightings in the wild are behind the maps of where the species live

58,923

places where the species live

21,794

names in five languages

18,725

texts about the species

5,202

photos of the species

On top of that, we have gone through water values, care and which species get along by hand.

Good to know

All articles
Water changes: how much and how often3 min read

The most important thing you do for your fish each week: how much water to change, how to vacuum the gravel, and what the new water needs.

Feeding: less is more3 min read

How much and how often to feed your fish, why overfeeding is so dangerous, and food for bottom dwellers and herbivores.

How to test your water3 min read

Liquid tests or strips, which values matter and when, and how to log them in the app.

Your aquarium, always in your pocket

Water tests, water changes, fish and plants in one place, with clear answers on what goes together and what needs doing.

  • Free to get started
  • Nothing to download, it runs in your browser
  • On your phone and your computer
Get started
An aquarium cycling, with ammonia and nitrite on a chart
The page of the neon tetra, with its photo, names and the aquariums it is in
The map, with a globe of where the aquariums’ species live

Everything your aquarium needs, in one place

  • Water values in plain words

    Green, yellow or red for your very species, and one sentence on what to do.

  • Fish that get along

    See whether fish thrive together before you buy them.

  • A safe cycle

    Follow a new aquarium through its cycle, step by step.

  • Plan before you buy

    Build the aquarium around a species or a region, and get a shopping list that fits together.

  • Where species live

    See on a map where your fish and plants come from in the wild.

  • Names in your language

    Species in your own language, with the scientific name in small print below.

How to get started

  1. 1

    Create the aquarium

    Give it a name and say how big it is. The rest can wait.

  2. 2

    Add fish and plants

    Search thousands of species and see right away whether they get along.

  3. 3

    Log the water

    Enter a water test, and we tell you if anything needs doing.

Ready to get started?

Getting started takes a couple of minutes.

Get started