How many do you think

Jennet2 60

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I have an 80 litre 60cm long x 30cm wide x 45cm high aquarium. I am going to keep mostly male Guppies with maybe a few other small fish. I did look up a couple, but have misplaced the notes I made on them.😳 I think it may be the Celestial Pearl Danioor Emerald Dwarf Rasbora??
Again, from what I remember, the approximate functional amount of water for fish would be around 55/60 litres, therefore may I have the benefit of your experience to nudge me to about how many fish it would be good to have in there please?
 
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Whatever you add, just take your time. Even when your tank has cycled, the biological filter will still need to build up slowly over time. Just a note...the Pearl Danios are boisterous, fast-swimming fish. They are not normally aggressive, but more timid fish may be reluctant to come into the open. Ensure you have loads of plants; these will help reduce nutrients and offer cover for fish.
 
Celestial pearl danios (Celestichthys margaritatus) are shy fish unlike pearl danios (Brachydanio albolineata) and need to be kept in a large group (I wouldn't keep less than 15).
Emerald rasboras (Celestichthys erythromicron) are hard water fish; they need harder water than yours (Seriously Fish suggests a minimum of 215 ppm/12 dH). Celestial pearl danios are a better choice for your hardness (8.8 dH, which is not very hard; a lot of so-called soft water fish would be fine at that level)
 
When you look at @Essjay 's excellent info - welcome to the words that matter in the hobby. Trade names can betray you. I've seen the words "pearl danio" on pet store tanks, but upwards of 3 radically different different fish for sale. "Pearl" sounds nice and is significant in Chinese culture, so the name gets used for sales (China is where the hobby is growing). You may suffer with Latin names, but they'll always give you better info when you research info on the needs and numbers of fish.

I stock conservatively. If I were going for Celestial pearl danios (Celestichthys margaritatus), I would go for 10-15, but the guppies would end up unemployed and back out in the pet store. You can find online stocking calculators but they always overestimate. We tend to want as many fish as possible and to reject calculations that suggest lower numbers. We decide they're wrong because they don't suit us. We've mostly all done it or do it.

No answer, right? It's a question of what you want to see when you sit in front of your tank. What's the vision/idea?
 
Last time I went to the store to pick up some plants I was talking to someone who has worked there with fish for a very long time. I was particularly taken by some small green tetras that were in. He told me these would be fine in my water. What are their latin name, and would they nip the guppy fins do you think, as I know neons did when I kept them.
 
The only green tetras I know of are the man-made ones and these.
 
@Matt Thanks, had just googled it and found out they are best in black water tanks and water much softer than mine. Question answered!
 
THose human made fins on guppies look very tasty to a lot of fish that.... get ready.... eat decaying plants in nature.
 
I was particularly taken by some small green tetras that were in.
Were these fish all green or with a greenish stripe? Green neon tetras (Paracheirodon simulans) always had a blue stripe for me, except when viewed from a specific angle when the stripe looked green.

If they were all green, they could have been neon green rasboras (Microdevario kubotai)
 
Were these fish all green or with a greenish stripe? Green neon tetras (Paracheirodon simulans) always had a blue stripe for me, except when viewed from a specific angle when the stripe looked green.

If they were all green, they could have been neon green rasboras (Microdevario kubotai)
Thanks Essjay. Getting an unknown error return when I try that link.

This is the fish I saw : The name is Paracheirodon simulans I think.

Green neons.webp
 
The link Essjay sent is for fish profile of the Microdevario kubotai. The same fish that is in that picture :)

Another profile site -
 
That's not Parachaeirodon simulans, it's Microdevario kubotai. I've kept both in the past. The M. kubotai are smaller fish and a greener when settled in a tank compared to a shop tank.


Matt beat me to it!!



Edit - these are green neon tetras, P. simulans
 
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That's not Parachaeirodon simulans, it's Microdevario kubotai. I've kept both in the past. The M. kubotai are smaller fish and a greener when settled in a tank compared to a shop tank.


Matt beat me to it!!
sorry! ^_^
 
That's not Parachaeirodon simulans, it's Microdevario kubotai. I've kept both in the past. The M. kubotai are smaller fish and a greener when settled in a tank compared to a shop tank.


Matt beat me to it!!



Edit - these are green neon tetras, P. simulans
Oh ok.... maybe I'll get there in a decade or so..... ho hum. Until then, I have this wonderful site and friendly people to give me a shove in the right direction. 😜🤪
 
M. kubotai are sometimes labelled as green tetras in shops, just to confuse customers :unsure:
 

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