its a 5 foot tank, 60x18x15 i think its 224 litres i think its 60 us gallons
Fish tank contains; 8 neon tetra's, 3 cardinal tetra's, 8 flame tetra's, 2 Tiger barbs, 2 green Tiger barbs, 2 gold tiger barbs, 3 Clown Loaches, 2 sword tails, " algae plecs, 1 Red tail shark, 1 Silver shark, 2 Gouramis (not sure what exact 1s, 6 Guppies, 1 silver molly, 1 female siamese fighter betta. i think thats it.
I will invest in a kit though.
A blue gourami that died did have laboured breathing i think, it died really slowly
Dimensions 152 x 46 x 38cm/60" x 18" x 15
Surface area 0.7 sqm/7.53 sq ft/ inches sq in
Volume 266 l./59 gal. (70.27 US gal.)
Probable volume 239 l./53 gal. (63 US gal.)
I would say that its not so much that your tank is overstocked, but your stocking is not ideal. You have some fish which will outgrow your tank, while a lot of fish which aren't in the right numbers for their particular species/types.
8 neons
3 cardinal tetras
In a 60gallon tank (or more or less 60gal tank), i would advise having a minimum of 10 neons and 10 cardinals and 10 flame tetras. A lot of people recommend having at least 6 of each, but in larger tanks (i.e. 50gals or more) i would advise a minimum of 10-12 of each, and a minimum of 15-20 in tanks 140gallons or more.
Small shoaling fish like neon and cardinal tetras shoal in the wild as a form of defence against predators. This behaviour is firmly rooted in their brains/instincts, and naturally in the wild when they are in shoals too small, they tend to get easily picked off by predators, so naturally such small tetras feel a lot more secure in larger groups. Even if there is no apparent threat to the tetras, they will still feel stressed in groups too small, so it is important to make sure that you have at least the minimum recommended amount of them for a shoal.
All shoaling fish have minimum recommended amounts of their own kind to be kept together because of this; shoaling is also a defensive behaviour, if your shoaling fish constantly shoal, then it is also a sign that they do not feel at ease and so you should look into things like the fish you are keeping with them and the actual amount of fish you have in each shoal etc to find the cause of then un-ease, and then sort the problem out. The larger the tank, the more fish you should aim to have in each shoal (as long as you don't overstock or over-crowd the tank of course) as for example a group of 6 neons would feel rather defenceless in a big, large 63gal full of strange fish etc.
2 Tiger barbs
2 green Tiger barbs
2 gold tiger barbs
These tiger barbs are all the same type of barb, they are just different colour variations produced by selective breeding (like how you can get red tailed and blue tailed guppys produced by selective breeding, but are the same fish, just different colours etc). So you could have green/emerald tiger barbs mixed with ordinary tiger barbs and they would shoal and act together normally and technically count as the same type of fish.
Tiger barbs are active, nippy and relatively aggressive fish. Many people face problems with tiger barbs nipping the fins of other fish they try to mix with the barbs. But the barbs are always ultimately more interested in each other and the easiest way to help reduce their aggressive/nippy nature towards other fish is to increase the size of the tiger barb shoal. At the bare minimum, you should aim to have 8-10 tiger barbs in a shoal, but in a tank such as yours I would aim to have around 12-15+ tiger barbs.
Even so, increasing the size of their shoal will not completely restrict their nippy nature towards other fish, so regardless of how big your tiger barb shoal is, it is advised that you do not mix fish like fancy or long finned strains of fish (like fancy guppys, long finned danios, bettas/Siamese fighting fish etc) with tiger barbs and slow swimming fish which occupy the same areas of the tank as the tiger barbs and also fish which have long feelers like gouramis etc- all of these fish are prone to being picked on by tiger barbs and all of these fish will have no defence against tiger barbs if the tiger barbs do choose to harass them.
2 sword tails
Swordtails are sociable fish and belong to the common livebearer family group of fish. They are pretty prolific breeders (females can produce over 40fry every 1-2months) requiring no special conditions to breed, and the males have very high sex drives. They are generally very peaceful towards other fish, but can face issues with each other if care is not put into their own stocking.
Male swordtails are very aggressive towards each other when there are females around (unless there is an exceptional amount of females per male like 15females per male). At the same time, you need at least 2-3females to a lone male (although the more females the better). Because of the males high sex drives, if you do not have enough females to a male, he will constantly and over-harass a female, so this is why you should have at least 2-3females to a male to help spread his attentions among the females and help avoid him concentrating on any one female too much (which would make her very stressed).
Females can be kept in all-female groups of at least 3females, but as far as I am aware the success of keeping males in all-male groups is more risky with swordtails, I would advise having at least 7males in an all-male group to help spread the aggression out amongst them and help prevent any one male getting too picked on. Personally I would either advise having a mixed gender group of swordtails, or an all-female one.
algae plecs
What type of plecos do you have do you know? There are hundreds of types of plecos, some of which grow to 3inches, while others which can grow to 3ft long. They also vary a great deal in dietry requirements, even the algae eating plecos often need some protein in their diet- also a lot of plecos can also become very territorial as they mature towards each other.
So for these reasons and more, you need to find out the exact type of plecs you have so you can look after them well.
1 Red tail shark
Please see my post on the last page of this thread, there is a lot to know about keeping RTBS (red tailed black sharks, or red tail sharks) and I'd rather not have to write it all out here;
http
/www.fishforums.net/index.php?showto...p;#entry1627904
1 Silver shark
Your tank is too small for silver sharks (also known as bala sharks), they are also shoaling fish- the absolute bare minimum recommended amount of gallons is a 75gallon long tank, but ideally at least a 100gal long is much better as these active, skittish sharks can grow up to 12inches+ long.
2 Gouramis (not sure what exact 1s),
6 Guppies,
1 silver molly,
1 female siamese fighter betta
You obviously need to find out the exact type of gouramis you have as there are many types, the index for labyrinth fish may be of help to you in ID'ing your gouramis as it has many profiles for many types of gouramis with pics of the gouramis in its profiles;
http
/www.fishforums.net/Labyrinth-f39.html
Do you know the genders of your guppys and your mollys?
With guppys and mollys, they have quite similar requirements to each other in keeping them. With their high sex drives and all, its advised that you have (with either guppys or mollys) at least 2-3females per male (unlike swordtails, you can safely keep more than one male with guppys and mollys as long as you have at least 2-3females per male), or an all-female group of at least 3females, or an all-male group of at least 5males.
The female betta should be fine on her own, but bettas are slow swimming fish and may find difficult in competing for food with the more active and competitive fish like the tiger barbs.
Ultimately, I think you need to do more research on your fish before you set your heart on buying them, I have written down some basic info for keeping your fish, but there is a lot more to learn about them, so I would encourage you to even now continue researching your current fish- there are many more aspects to keeping your fish like habitat and tank decor, feeding/diet, substrate, filtration etc.
If you sort out your tank stocking, your fish will feel less stressed and more secure and happier, this will help prevent disease/parasite outbreaks amongst your fish (as non-stressed fish are less likely to fall ill) to a large extent.
Personally I would change your tanks stocking to either;
10 neon tetras
10 cardinal tetras
10 flame tetras
15 tiger barbs (whatever colour variations you go for doesn't matter as before explained)
3 clown loaches
1 Red tailed black shark/RTBS
7 swordtails (1male 6females, or just 7females)
7 mollys (1male 6females, or just 7females or 7males).
And re-home the silver/bala shark, female Siamese fighter, gourami's (and possibly your plecos depending on what type of plecos they are exactly) and guppys- either that, or move them to tanks with tanks mates more suited to them and which has enough space and gallons to keep them permanently in.
Or have;
10 neon tetras
10 cardinal tetras
10 flame tetra
3 clown loaches
1 Red tailed black shark/RTBS
7 swordtails (1male 6females, or just 7females)
7 mollys (1male 6females, or just 7females or 7males)
7 guppys (1males and 6females, or just 7females or 7males etc)
5 female Siamese fighting fish
(How many gourami's and their genders you have depends on the exact types of gourami's you have).
And rehome the silver/bala shark, tiger barbs and plecos (depending on what types you have) etc.
Both of these fish stocking mixes suggestions could potentially leave some space for new different fish or critters depending on what they are, and would either way be a lot more suited to the fish that you already have. But personally I would choose between one of these stocking suggestions and just keep it to that for a while; re-homing some of your fish and gradually building up on the numbers of your other fish will take quite a while (as even in a cycled or established tank, its generally advised you don't add too many fish at once, just a few a week is good etc).
I would advise have at least 2 filters in a tank such as yours, as although it is not a particularly large tank, it is a rather long one and even if your filter can filter the gallons of your tank with ease, it will have trouble with the water current shifting the waste from one end of the tank back to the other- so having 2 filters to deal with both ends of the tank would be beneficial

.
How often do you do water changes on the tank and how much do you take out on average?