Questions tagged [aquarium]

Indoor containers holding water and creatures (fish, crustaceans, snails, etc.). For specificity, consider adding a "freshwater" or "saltwater" tag.

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Identify filter for fish tank?

I have a filter since some years now. Now I need some part for repair. But I can not find any print on it to identify the company. Maybe someone knows more about it. It is green, looks technical ...
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Treating a sick Angel fish

My Angel fish has two pink growths on either side where her dorsal fins were. The fins are now missing. The guy in the fish shop said it looks like a bacterial infection and sold me some Erythromycin. ...
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Does a chipped glass corner/edge compromise integrity on a rimless aquarium cover?

I received a rimless aquarium and lid that were damaged in shipping. The lid was chipped on the very corner, and I'm working on a resolution with the seller. My understanding is that some glass (...
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Can you help me identify baby snails in my freshwater aquarium?

I have a freshwater aquarium which I added plants and two nerite snails to approximately two weeks ago. Today I noticed two baby snails -- one about 2mm long, the other about 1mm. As noted I do ...
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3 votes
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Weird cocoon like thing in aquarium

I have a 60 liter aquarium with platies, guppies, neon tetras and some shrimp. I have a couple different plants (don't know the names). Today I noticed the following on one of the plants: It's about ...
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2 votes
1 answer
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How much does feeding amount relate to Platy fish population?

I've a 200L fish tank with Platys breeding in it for a couple of years now. While I started with a reasonably small number, I think there are around 30 breeding sized fish in there now plus all their ...
5 votes
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Can too much light kill fish?

I have a 20 L aquarium, mechanical filter, lights with timer, everything was fine. Since the (live) plants were not "too" alive, I upgraded the light. Instead of the generic LED lamp ...
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1 vote
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Why are leafy green vegetables safe for snails given their high copper content?

I've frequently seen leafy green vegetables like kale recommended as food for snails (in part due to their high calcium content). However, I was reading the nutritional content for several kinds of ...
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Is my platy pregnant? [duplicate]

I think my platy is pregnant (the predominantly orange pltay in the picture). I bought her a few days ago and have noticed her to be getting larger each day but I'm looking for more advice.
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Widow Tetra fish dying

My widow tetra fishes are dying one by one.They seem to float around with lack of control and seems gasping for air.I have quarantined this fish and added some common salt to help it breathe. It is ...
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1 vote
1 answer
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Aquarium White Gravel Discolouration

I have set up a new aquarium. I laid aquarium soil as the base with gravel on top. After 1-2 weeks, the white coloured stones are discolouring. Is it algae growth? I’m thinking of replacing the white ...
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1 vote
1 answer
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Can neon tetras and African Dwarf Frogs live together?

I'm about to cycle a 10 gal fish tank with maybe 1-2 neon tetras, and I was just wondering if African Dwarf Frogs and neon tetras would be a good choice.
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1 answer
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Why putting Peas in the Fish Tank to feed fishes clouds the fish water?

I have a 30 gallon fish tank and the water was very crystal clean when I feed my fishes ONLY their fish flakes and pellets. As soon as I threw bunch of boiled, skinned, washed peas into my fish tank, ...
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2 votes
1 answer
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How to feed a Pleco in a community tank?

I got a Pleco to control brown algae in my community tank (3 female Bettas, 1 Pleco). At this point, the algae is largely controlled, which leaves another problem: I need to increase supplemental ...
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Amano shrimp disappearing 1 day after adding to an aquarium

As a test (as I was cautious even after the shop keeper said it's fine), I bought 3 Amano shrimp to add to my aquarium. One day later only one was still there (right top of the pic). All three were ...
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4 votes
1 answer
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How to change which water conditioner I'm using

I have two tanks: my ghost shrimp tank is using Tetra AquaSafe for Bettas water conditioner (the tank used to also contain a Betta fish, but no longer does). My Betta tank is using Seachem Prime water ...
3 votes
2 answers
103 views

New freshwater fish tank disaster, please help

Santa elves brought a 37 gallon freshwater fish tank early for Santa, youngest asked Santa for fish. Petsmart said use spring water for the tanks, so I did. Tank set up for a week. Went to aquarium ...
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2 votes
1 answer
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Is this a planaria?

This morning I have found a lot of small white worms hanging around the walls of my fish tank. Do you know what it is? It might be a planaria, but I am not sure. Should I be concerned?
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Why is my pleco growing extremely fast after being introduced to large tank?

Hi! I got my pleco when it was still quite small, and it quickly outgrew its 10-gallon tank (I know 10g is too small but I was on a budget) and I just now moved all my fish(pleco included) to a 36 ...
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Is my Red Platy pregnant? [duplicate]

Hi can someone please tell me if my red platy is pregnant.. I got her from Maidenhead Aquatics about 3 weeks ago and she seems 'bigger' to me She also has a dark line running down her stomach I placed ...
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1 vote
1 answer
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Whats causing filters to implode?

I've got two 24 gallon tanks that both have the same filter inside of them but for some reason in one of them the sponges seem to be sort of "imploding" and I've got no idea what could be ...
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4 votes
2 answers
303 views

Is it acceptable to keep an aquarium in a garage?

I was wondering if it is possible to keep an aquarium for tropical fish inside a garage in the UK? The garage is made of brick but does not have any insulation and therefore gets quite cold in the ...
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4 votes
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What is this white foamy structure in my aquarium?

My aquarium (180 l) is inhabited by two Mikrogeophagus ramirezi, several Corydoras julii and some uninvited ranshorn snails. Today three of these structures appeared. They are white, around 1 cm wide ...
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1 answer
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Are there any natural forms of aquatic vegetation which do not stand up in water? [closed]

We are carrying out some experiments where we study influence of underwater vegetation on waves. Unfortunately, the stalks of artificial 'vegetation' which we have seem to be too dense (or too stiff)....
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1 answer
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Baby guppies 'appear' when rearranging tanks

I have two tanks with around 30-40 guppies and when I have re-arranged the substrate / plants / decorations I sometimes find that one or two baby guppies 'appear'. The mother does not look pregnant at ...
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2 votes
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Salt water aquarium on a jetty over the ocean, with no filtration just constant ocean water circulation

I am very fortunate to be living in Raja Ampat, West Papua, one of the richest areas in the world for biodiversity. I also live directly on top of a fringing reef. My house is on stilts over the ...
2 votes
2 answers
78 views

Is the injection of carbon dioxide into a planted aquarium a detriment to fish living in it?

From the start, thank you for your time and consideration. Whilst planning a planted aquarium setup that would include CO2 injection, I stumbled across an article about possible behavioral ...
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0 votes
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Do I have to take my Koi Fish out of my 30 Gallon Tank eventually?

I accidentally bought a Koi fish thinking it was just a normal goldfish. After about 4 years now, he has gotten bigger (mouth to tail ~ 7 inches long) and more aggressive in our 30 gallon aquarium. He ...
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1 vote
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Why is my betta fish starting to have a dull color? [duplicate]

I have a betta fish that I’ve had for a year now. I’m not exactly sure what kind he is, but I found a picture of him when I first got him and he was a really bright pink/purple, his tail and fins were ...
3 votes
0 answers
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Help me sex this Endler's livebearer

It looks like a female (no colors and round belly), but it seems to have a gonopodium organ, a dot on the tail-fin that other females lack and the gravid spots near its vent are fainter and higher up ...
2 votes
0 answers
49 views

How can I prevent my plants from getting eaten too fast?

I've got a huge problem with my fish and plants. They eat them too rapidly. Put in 5 plants yesterday afternoon. Today they are half eaten already. Mostly, the sword bearers are responsible. Eaters ...
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Does mint plant affect guppies?

Can I try the step 1 and 2 posted here with a fish tank of guppies: Cutting a stem of mint; Placing mint stems in a glass of water fish tank containing guppies? Will guppies enjoy the mint plant? Is ...
1 vote
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How to get rid of black hair algae?

My aquarium is infested; it's on the plant leaves/pebbles/glass. I tried to remove everything manually but it soon bloomed again, big water changes, shortening the lighting time, but no success. It ...
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6 votes
3 answers
193 views

Why do my Betta fish keep dying?

I got my first Betta fish (name: Dream) back in September of 2020, he was the first pet I've ever owned and it took me a little time to be able to get him a proper home. But after educating myself ...
3 votes
1 answer
2k views

Common goldfish with "bleeding" around face, gills and fins

I look after two common goldfish in a 56L filtered tank with an airstone for additional aeration. Over the past two days, one of the fish has been appearing to be sick, suffering with what I can only ...
2 votes
0 answers
45 views

Color change in guppy

My guppy looked pretty healthy and shiny just three days ago: And yesterday... it just darkened. The scale pattern just got so dark all of a sudden. Should I be worried? And this is today:
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Is my guppy pregnant? It's my first fish so i don't know [duplicate]

Is my guppy pregnant? I really hope it is but I'm not sure...
2 votes
1 answer
332 views

Difference of CAE, SAE, and OTTO fish

I bought an algae eater at Petsmart and I recently learned myself that there are different algae eaters that look the same at a young age. I bought an algae eater that has a brown and cream brown body....
2 votes
0 answers
43 views

Black molly male attacking female

We have 3 female black mollies. 2 black ones which have turned a bit silvery/whiteish. Originally, we had one male which had the same colour, but we noticed it will be dying soon (swimming upside ...
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2 votes
1 answer
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Aquarium with mud production that clogs the filtration system

I've had a 120 L aquarium for a few years; about 40 small fish are in it (including 6 Corydoras paleatus and 12 fire tetras). Now, as of a few months ago, I've noticed that the filter, the sponge, and ...
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2 votes
1 answer
395 views

Is my guppy healthy? Its colour is weird

I just bought a male and female guppy, and the male guppy is really small, probably a month or two old. This is my first time getting a fish. The male guppy seems to have a black spot near his head. ...
3 votes
1 answer
66 views

Is there anything more that I can do to make my dwarf hamsters more comfortable and happy?

I have three Russian dwarf hamsters that are almost 41/2 weeks old now. My sister purchased two hamsters that she thought were both females, but she realized they were not once she unexpectedly ...
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4 votes
1 answer
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Dried goldfish became alive after re-introducing into water

Anecdote My relatives went on a trip leaving behind their goldfish. When they returned, they noticed that a fish had jumped out of the water and had become dry, apparently dead. But the fish was put ...
1 vote
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Pregnant platy fish not releasing fry and developing a white tube gland [duplicate]

I've had my platy fish for 3 weeks and she's pregnant. She squared off last week, as well as developing a white tube/anal gland. I'm just wondering if anyone can help as to when she might release her ...
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2 votes
1 answer
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Fish swimming with mouth always touching the water surface

I have a fish bowl and they are all swimming with their mouth touching the water surface, almost always. Are they hungry? Do they suffer from insufficient oxygen concentration in water? Is the water ...
1 vote
0 answers
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Can tapeworms from brine shrimp cause infection to humans or to fish?

I have angelfish which laid eggs which turned into fry. I am feeding them with baby brine shrimp. We all know that brine shrimps (especially the ones which look orange and often used for fish feed) ...
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2 votes
1 answer
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How many fish for a 29 gallon tank?

I am wanting to know how many fish could thrive in a 29 gallon (110 L) tank. Dimensions of the tank are 30” in L x 12” in W x 18” in H (76 x 30 x 46 cm). These guys could include any live bearers like ...
1 vote
1 answer
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How do I keep my fish tank and fish safe against Raid Fogger bomb for roaches?

This is urgent for me, so any immediate suggestions/answers are appreciated! I live in a one-bed apartment with three other roommates in Colton, California. Recently, we installed large tanks with ...
-1 votes
1 answer
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Betta dying help

I forgot to save the old water from when I cleaned my betta’s tank and now he’s floating at the bottom. What can I do? I have already tried putting my guppies’ tank water in to do half half and it’s ...
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3 votes
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How long should I leave old filter in new tank after installing a second, new filter to replace the old one? [duplicate]

Hi I started a tank a week ago with 3 guppies in my daughter's room, but the HOB filter was too loud, so I have now changed to Fluval U2. I have both filters in tank now since yesterday, but my ...
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