r/fishtank is a subreddit with 96k 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
: "HELP MY TANK IS OVERSTOCKED AND I WAS LIED TO"
135 posts
#2
Show & Tell
: "some shots of my fish :-)"
18 posts
#3
Full Tank Shot
: "Is this overcrowded?"
10 posts
#4
Freshwater
: "Used my 10+ year-old Canon Rebel T6i to photograph a guppy at work 🐟📸"
10 posts
#5
Discussion
: "Update: Fish abandoned for 1.5+ years"
9 posts
#6
DIY/Build
: "New fish tank suggestions"
6 posts
#7
Plants
: "Dahlia update"
4 posts
#8
Other
: "Smelly fish tank?"
2 posts
#9
Fish Music Video
: "I lip synced my loaches to early 2000s Eminem, super raunchy 😀"
1 post
#10
Saltwater
: "WTF IS THIS AND IS IT GOOD OR BAD ? YALL ARE THE BEST 🫡"
1 post
Member Growth in r/fishtank
Yearly
+29k members(43.7%)
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6.3% / yr
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120k members
14.3% / yr
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344k members
17.0% / yr
r/BettaJunkies_USA
7k members
3.4% / yr
r/fishkeeping
35k members
31.0% / yr
r/Goldfish
84k members
20.4% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/fishtank, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: August 15, 2026