The fish in the video is a Gulf Coast pygmy sunfish (Elassoma gilberti), one of several Elassoma species native to the southeastern US. They’re tiny, slow moving ambush hunters and can be ridiculously picky about food really only taking live foods. I feed them a mix of live black worms, baby brine shrimp scuds and other microfauna I dosed the tank with. I’ve gotten a little obsessed with the genus at this point and also keep Everglades pygmy sunfish, Okefenokee pygmy sunfish, and a banded pygmy sunfish but this is by far the most beautiful species I have.

T. gracile

I hope my tank isn’t overcrowded I have 3 female guppies that I think are about to have babies about 10 shrimp and snails…. So many snails…. It’s a 75 gallon

I got some new tanks and want to display them side by side. Unfortunately the cupboard I want to put them on is a little short. Would my tanks be at risk of fracturing if I put it like that?

They are 7.9 gallons (or about 30 litres each)

Their eyes look like they’re popping out… or is it just me? Thank you for any guesses.

I have an empty tank that's been cycling with just plants and dragon stone from an established tank and a couple of guppies.

I have these little dots that are moving around all over the tank.

Any ideas what these are? Are they harmful?

Thanks in advance.

I didn’t really have high hopes for this project- I made it pretty quickly with left over topsoil and sand from my leopard gecko’s enclosure, and a scoop of muck from my local creek. I’ve genuinely been so happy with how it turned out though! Both plant species have been growing really quickly, and I got so many more creatures than I expected, basically all of which seem to be doing pretty well! Here’s a quick list below with everything I’ve seen:
- scuds
-ostocods (?)
- annalid worms (there’s a ton of them, they kinda dance all together while sticking out of the substrate? It’s super cool)
- flatworms (possibly two species? Some much larger)
- big snail (didn’t mean to grab him, he unfortunately died and was eaten by the worms)
- bladder snails (?)
- other snails (tiny, cone-shaped shells)
- freshwater hydra!? (Super exited about these)

I really recommend trying this if it’s legal/alright to take from a body of water near you, so far it’s been a very cheap and low stress way to have an aquarium again

On its lip, it's a small growth, the color of the surrounding tissue, almost like a little horn. Is that impairing its ability to eat. A little bit of reddisness the surrounding tissue.

I'm wondering if anyone can provide a general Nyos Iszler bacterial infection rather than an injury.

Tank is a 60 gallon planted with a heavy amount of wood. I live in southeast Michigan, which generally has hard water.

no water issues! i can’t tell if this guppy has been pregnant or is pregnant. she has small red stringy things sticking out of her butt. none of my other guppies have this. should i separate her? what could it be?
also more info: she has been pretty agressive lately, but doesn’t seem stressed. she still hangs out with the other fish and hasn’t been at the bottom or anything unusual. her tummy doesn’t seem to be getting bigger or darker. my girl to boy ratio is 8:1 so she isn’t getting messed with by the boy.

sorry about the picture quality!

One of the Moss balls is a little angry, I put it in too early my ammonia was too high while I was cycling. And the rest I just planted a couple of days ago. I put in one root tab in the back middle, and I'm hoping my 860 lumens will be enough for the dwarf hair grass.

I'm an amateur, thoughts? Planning to stock with shrimp, 10 gallon tank.

I’ve got 2 platies ( my dad bought them as a suprise which I really didn’t want ) and a couple cherry shrimps. I’m gonna buy some Celestial pearl danios.

I feel like it’s still quite empty, what other plants should I add and where should I put them

So I recently had an incident with my fish tank due to high ammonia and it ended up killing most of the fish in my tank. I’m going to cycle a new 5 gallon tank for the survivor, my betta. My question is can I take the sponge from the filter of the tank with the high ammonia in it to help cycle the new tank or should I just let the new tank filter it cycle on it own and create new bacteria?

copy pasting the caption-

https://www.reddit.com/r/fishtank/s/6HxVlGxzlW

- ok yall, the og post of my future tank idea is linked above but this is the updated version
- i have taken everyone’s comments into consideration and have done a lot more research on compatibility
- again, its a 75 gal and will be a natural, densely planted tank. im probably gonna end up tweaking it more but this is where its at now
- IM KEEPING MY GLOFISH SKITTLES, DAMMIT. idc if Y’ALL THINK they’re ugly or unnatural looking, there’s a reason they’re going in MY tank and not yours
- someone recommended bolivian rams so i proceeded to look them up and found similar german blue rams instead, which i liked better (yes, ik they aren’t the same)
- i have adjusted the ratios for all groups of schooling fish so that each has at least 8
- i’m still not sure what i wanna do about the gouramis
- i don’t understand what “too many species” or “too many types of plants” mean when there are enough of each kind of fish and why would plants even matter 🤨??
- some fish are also MAYBES (which is why it says “MAYBE” in parentheses
- thank you to the person who told me to make a checklist lol and those who were actually kind with their advice instead of straight up just shitting on my fish choices

main source for research: https://en.aqua-fish.net/ less

So I was on Facebook marketplace last night looking for free tanks because I am looking to grow my collection. I found a $30 tank for free and was excited to pick it up the next day! I was expecting a fairly empty tank but when I got there, the lady said there were fish inside!!! It looked like about an inch of water and I was shocked to see little fish swimming around.

I took the tank home and started taking out the water to make a little temporary home in a bucket. Then I learned there were TWO shrimp as well and what appears to be a gray crawfish?? I was very shocked. The fish I still have yet to identify but they remind me of mosquito fish. I started cleaning it best I could in my back yard. Took out the substrate and hosed it off in a towel, and scrubbed the tank.

I unfortunately had to leave for work so i left the critters in a bucket in my room, hoping they’ll be fine when i return. Sure enough, it’s 1am and they’re still fine! I returned the substrate to the tank and then tried to figure out this sponge filter which appears to be working. I added about 12 gal to the 30gal tank and am letting the filter run overnight before i try and acclimate the fish to the tank. I think this is the best option right now? I definitely don’t want to put anything in my established tank but I figured that these critters are already seeming like they can handle anything so i don’t think trying to set them up in this tank first would be too much of a risk?

TLDR; i got an old tank with fish and am wondering what to watch out for while trying to re-establish it

I noticed a few worms in my tank. But im not sure if they're good or bad

A leech cuddle puddle, one of my favorite things!

I just noticed this red bump on one of my cories. Any idea what it could be?

Hi all, just bought this second hand 180l/78gal tank!
I got it at the same time I was moving so I wouldn’t have to worry about putting it in my boot.

Sadly I discovered that the only spot it could be put at was crooked (the former owner built a sunroom on above an old terrace that was tilted toward outside the house to evacuate water). It hasn’t been noticed before because we don’t feel the sloping and I don’t use a 3 feet long glass to drink water.

The house being over a century old, they didn’t put 1 or 2 degrees of slope but a lot more (there is at least 2 centimeters of difference between the right and left side).

Do you have any advice on how could I level this up ? This specific tank stand has 8 not leveling pads under it so I worry if I use shims only the four out of the 8 feet will be under load (only corners)…

The tank has about 4cm of water in it to keep the gifted plants alive (I won’t be able to change anything for a week and didn’t want to fill it just to empty it afterwards or take a chance of not seing it shatter). There is no filtration nor heater plugged for at least the same period so I don’t know if the plants will make it

FYI : fishtanks in the sunroom is often a « bad » idea but it is isolated and has AC so there won’t be sudden water temperature changes and the tank is placed far from the windows, this spots receives only indirect sunlight to limit algae.

Thank you!

I have a 40 gallon tank with roughly 15 plants in it. I wanted to add some plastic rock outcrops, is this harmful long term?

I filled this tank up and it is about 4cm off level. Is this going to be a problem?

Is this okay?

I just set this tank up and would like recommendations or tips etc, I plan to house a betta and some other things

(Should I add an air stone?)

I was looking at my tank this morning and there were worms? There didn’t seem to be any under the surface just on the top and a little under the water line, they moved and varied in size some were super tiny and some were little. My snail was right h fed them but neither Optimus prime( the snail) or my fish seemed to be affected or bothered by them and they are only in that one corner. I have only live plants in my aquarium and use fluval stratum for my substrate. Tank is about 2 months old. Does anyone know what they could be?