r/fishtank is a subreddit with 95k members. The community frequently discusses fish, help, tank, fish tank, and filter, and they frequently recommend/review fertilizer, stocking, and plant, and the most common flair used is help/advice, show & tell, full tank shot, freshwater, and discussion.
A place to connect with fellow fish lovers, share photos, videos, and help new fish keepers!
Popular Topics in r/fishtank
#1
Fish
34 posts
#2
Help
29 posts
#3
Tank
28 posts
#4
Fish Tank
22 posts
#5
Filter
8 posts
#6
Shrimp
8 posts
#7
Breeding
8 posts
#8
Betta
6 posts
#9
Algae
5 posts
#10
Cycling
5 posts
Products Discussed in r/fishtank
Fertilizer
9 reviews
#1
Seachem
4.8★ from 4 reviews
#2
Aquarium Co-Op
5.0★ from 2 reviews
#3
Osmocote+
5.0★ from 1 review
Stocking
3 reviews
#1
Betta
4.0★ from 1 review
#2
Ember Tetra
4.0★ from 1 review
#3
Shrimp
5.0★ from 1 review
Plant
1 review
#1
Hornwort
4.0★ from 1 review
Flair Used in r/fishtank
#1
Help/Advice
: "Parents are both black , but half the babies are white& half are looking black Why? , just tryna learn. (Just over a month old babies)"
123 posts
#2
Show & Tell
: "Anyone else just"
19 posts
#3
Full Tank Shot
: "Zelda themed tank for 7 year old"
18 posts
#4
Freshwater
: "Was out of town for few days surprisingly my ram’s has been waiting for a surprise for me"
13 posts
#5
Discussion
: "This baby fish survived over a month in my garage"
12 posts
#6
Plants
: "I’m finally beating BBA"
4 posts
#7
Other
: "They said boil wood to release tannins, did not expect crude oil"
3 posts
#8
News/Article
: "Moved my betta into a community tank"
2 posts
#9
DIY/Build
: "Dwarf Frogs and Blood Parrots enjoying my creations. Plastic wine glass and juice jugs turned into floating habitats."
2 posts
#10
Art
: "These are my Neon Tetra and Betta Fish illustrations. Which one is better?"
1 post
Member Growth in r/fishtank
Yearly
+29k members(44.2%)
Similar Subreddits to r/fishtank
r/Aquariums
1.5M members
6.2% / yr
r/AquaSwap
119k members
14.3% / yr
r/bettafish
342k members
17.3% / yr
r/BettaJunkies_USA
7k members
3.6% / yr
r/fishkeeping
34k members
30.6% / yr
r/Goldfish
83k members
21.1% / yr
About
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This page gives a focused view of r/fishtank, including current member size, discussion patterns, product reviews, and related communities to explore.
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Last updated: July 24, 2026