r/aquarium is a subreddit with 165k members. The community frequently discusses fish, tank, help, plants, and struggling, and they frequently recommend/review stocking, aquarium, and canister filter, and the most common flair used is help, photo/video, showing off , discussion, and plants.
The premier community for aquarium hobbyists and aquascapers of all experience levels. Whether you manage a 5-gallon nano tank or a 75-gallon community ecosystem, join us to share your setups, ask for advice, and discuss fishkeeping. Check out our quick links below to get started.
Popular Topics in r/aquarium
#1
Fish
90 posts
#2
Tank
84 posts
#3
Help
40 posts
#4
Plants
29 posts
#5
Struggling
27 posts
#6
Betta
17 posts
#7
Algae
16 posts
#8
Filter
14 posts
#9
Shrimp
13 posts
#10
Plant
12 posts
Products Discussed in r/aquarium
Stocking
31 reviews
#1
Aquarium Fish
4.3★ from 13 reviews
#2
Aquarium Snail
4.5★ from 2 reviews
#3
Hillstream Loach
5.0★ from 2 reviews
Aquarium
21 reviews
#1
Amazon
5.0★ from 6 reviews
#2
API
4.5★ from 4 reviews
#3
Aquarium
3.8★ from 4 reviews
Canister Filter
17 reviews
#1
Fluval
4.5★ from 8 reviews
#2
Oase
4.5★ from 4 reviews
#3
SunSun
4.5★ from 2 reviews
Flair Used in r/aquarium
#1
Help
: "What is this new thing that appeared in my Molly tank?"
99 posts
#2
Photo/Video
: "Is my tank overstocked ?"
30 posts
#3
Showing Off
: "Glass cats finally coming out"
27 posts
#4
Discussion
: "Every time I clean my axolotls tank..."
24 posts
#5
Plants
: "Do I have too many plants for a betta fish?"
10 posts
#6
Freshwater
: "The war is over. Instead of ramshorn I now have an assassin snail problem."
5 posts
#7
DIY/Hacks
: "Play sand rinsed 26x"
4 posts
Member Growth in r/aquarium
Yearly
+25k members(17.6%)
About
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This page gives a focused view of r/aquarium, including current member size, discussion patterns, product reviews, and related communities to explore.
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Last updated: May 29, 2026