Penguin tetra same as Black neon tetra? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 18 Old 06-13-2018, 11:12 PM Thread Starter
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Penguin tetra same as Black neon tetra?

I have recently started a tropical fish tank and to date I have 5 cardinal tetra's, 4 tiger barbs and 3 black neon tetra's. I am adding a couple more tiger barbs as I was told they like to school in at least a group of six, I was going to get some more black neon tetra's but the store doesn't have any more, what they do have are penguin tetra's which look exactly like black neon's - my question is will the two different types hang out as one group? I heard penguin tetra's can be aggressive is this true? Should I avoid penguin tetra's and find black neon tetra's else where?
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post #2 of 18 Old 06-15-2018, 01:16 AM
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Not the same...

These guys have forgotten more than I know...
Top 5 Tetras for Beginners - Fishkeeping Advice
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post #3 of 18 Old 06-18-2018, 11:08 PM
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They different fish.
Black neons- h. Herbertaxelrodi
Penguins - t. Boehlkei

I would suggest against them, and try to source black neons elsewhere.


Depending on tank size, I would suggest increasing tiger barb school to at least 10. Larger schools are unlikely to cause problems like smaller schools can.

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post #4 of 18 Old 07-02-2018, 03:00 PM Thread Starter
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They different fish.
Black neons- h. Herbertaxelrodi
Penguins - t. Boehlkei

I would suggest against them, and try to source black neons elsewhere.


Depending on tank size, I would suggest increasing tiger barb school to at least 10. Larger schools are unlikely to cause problems like smaller schools can.

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Thank You for the advice, I did get more black neon tetra's, I have six of them now and they are very active and easy going.

I have six tiger barbs and they seem very hungry, curious always moving and chasing each other. You mentioned that getting more will help with their behaviour, in actual fact I just added a baby bristlenose into the tank yesterday - the second I let him out of the bag and he latched on the side of the tank - the tiger barbs all started nipping him like he was food he didn't swim away so I feed them food witch seemed to divert there attention. thinking that was that and watching the tank as the fish returned to normal and the bristlenose began to investigate his new home, I noticed the barbs following him from a distance like within 5 inchs of him but not nipping him. I left the room to start dinner and was gone for 20mn. When I came back he was laying on the substrate - dead - with the barbs lingering around him .

Was it stress that killed him? Or was it the tiger barbs? Does this mean I should pick tank mates carefully? Will there behaviour change if I get more? Was it a mistake to get tiger barbs in the first place? They are very cute and I really like them but I also like other fish...

Thanks for listening and for the replies it is very helpfull

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post #5 of 18 Old 07-02-2018, 05:06 PM
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Was it stress that killed him? Or was it the tiger barbs? Does this mean I should pick tank mates carefully? Will there behaviour change if I get more? Was it a mistake to get tiger barbs in the first place? They are very cute and I really like them but I also like other fish...

Thanks for listening and for the replies it is very helpfull

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was its fins torn apart? because if they were It was most likely the tiger barbs because i have found Bristlenoses to be hardy and if it was properly acclimated it should have done just fine, if you want a more peaceful and colorful barb that imo is just as fun i suggest to replace the tiger barbs with a school of 6-10 cherry barbs.

Over Stocking Only Becomes A Problem For The Fish When They Can Feel It, But It Becomes Your Problem When They Feel It.
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post #6 of 18 Old 07-02-2018, 10:29 PM
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Originally Posted by Anahera View Post
Thank You for the advice, I did get more black neon tetra's, I have six of them now and they are very active and easy going.

Was it stress that killed him? Or was it the tiger barbs? Does this mean I should pick tank mates carefully? Will there behaviour change if I get more? Was it a mistake to get tiger barbs in the first place? They are very cute and I really like them but I also like other fish...

Thanks for listening and for the replies it is very helpfull

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Glad that you got some more black neons and seem to be doing well.

As for the death of the BN, there maybe numerous factors of why it is the case. It could be stress, could be poor stock- purchased a sick fish - or poor water quality. The most logical IMO is water quality, BN are rather hardy and have thick plating with means they can hold their own. In saying that a baby BN is likely not to do well in poor conditions, so do you happen to know your ammonia, nitrite and nitrate levels of the tank? And Im sure you acclimated the BN to the tank, but how exactly did you acclimatise the fish to the tank - did you float the bag for a minute, add water, not add water, do a rain dance ect..? ;)

If it is indeed the tiger barbs, adding more can help diffuse aggression so they focus more on each other in the school rather than their tank mates. In saying that, if it is indeed the barbs hurting other fish your black neons would also become victim at some point (basically its unlikely its the barbs fault, even if they do seem to be the culprit).

I dont think it was wrong to get tiger barbs - they are fantastic fish to keep and would love to get a few - but you do have to be aware that they need a specialised environment - like you cant go out and get a longfin fish and plop it in there thinking that everything will be fine and it *will* work out.

Consider next time to acclimatise new fish with the lights turned off - and even potentually room lights dimmed - to simulate night so the new fish isn't a big visual aid of 'check me out' and to let them get established a couple of hours before hand?

Depending on the setup, the tank may also appreciate a few more decorations to allow plenty of hiding spots and reduce line of sight.

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540L/140G - 'Tidal Jungle' (Crabs) | 254L/67g - 'Backwater Pool' (Fish/Snails) | 96L/25G - ''Twisted Minds" (Fish/Snails)

I've never had any problems with 'Impulse Buying'. They're just animals that I forgot I had planned to get.
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post #7 of 18 Old 07-03-2018, 01:20 AM
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If it is indeed the tiger barbs, adding more can help diffuse aggression so they focus more on each other in the school rather than their tank mates. In saying that, if it is indeed the barbs hurting other fish your black neons would also become victim at some point (basically its unlikely its the barbs fault, even if they do seem to be the culprit).

I dont think it was wrong to get tiger barbs - they are fantastic fish to keep and would love to get a few - but you do have to be aware that they need a specialised environment - like you cant go out and get a longfin fish and plop it in there thinking that everything will be fine and it *will* work out.


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I agree with you except about the tetras also being attacked with my reason being that tetras are faster swimming fish than the pleco and also have fairly short fins that would not look like nip toys to the barbs. it could also have been a combination of stress cause by poor acclimation and the fact that having a group of fish schooling around you would stress anyone out pretty quick. i recommend aclimation by floating the fish bag in the tank for 15 minutes and than opening the bag and adding half a cup of water every 15 minutes until the water in the bag is a little over doubled.

Over Stocking Only Becomes A Problem For The Fish When They Can Feel It, But It Becomes Your Problem When They Feel It.
-TheGreatSlayer
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post #8 of 18 Old 07-03-2018, 08:40 AM
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I agree with you except about the tetras also being attacked with my reason being that tetras are faster swimming fish than the pleco and also have fairly short fins that would not look like nip toys to the barbs. it could also have been a combination of stress cause by poor acclimation and the fact that having a group of fish schooling around you would stress anyone out pretty quick. i recommend aclimation by floating the fish bag in the tank for 15 minutes and than opening the bag and adding half a cup of water every 15 minutes until the water in the bag is a little over doubled.
BN are pretty quick if they want to be, more robust than any tetra I've seen, and also great at hiding - really good at getting into small spaces... not to mention, unless you get a longfin bristlenose - which it certainly sounds like the OP didnt get - they have short fins... so *shrug* I really dont see your point in all honesty. :)

As for acclimation, we dont know what the OP has done. So we cant really comment for reccomendations until they post. Its like placing the wagon in front of the cart. ;)


I also disagree with you on that method, since opening the bag will just result in increasing O2 that was previously depleted and rapidly increasing pH - thus ammonium quickly being converted into toxic ammonia. Likewise, it takes in excess of a week for the fish to properly acclimatise to water parameters (such as pH) other than temperature, so adding water is essentially doing moot biologically speaking. A quick acclimation to temperature and then netting - I tend to prefer using my hands as to help prevent torn fins, and wear on the slime coat like a net would... - the fish out and adding to the tank is certainly suffice and highly reccomended by many... including myself. Likewise, it also helps to avoid cross contamination of water - reduce any pathogens entering your aquarium, so fish store water is not introduced to your home aquarium...

Likewise, a quarentine never hurts!

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540L/140G - 'Tidal Jungle' (Crabs) | 254L/67g - 'Backwater Pool' (Fish/Snails) | 96L/25G - ''Twisted Minds" (Fish/Snails)

I've never had any problems with 'Impulse Buying'. They're just animals that I forgot I had planned to get.
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post #9 of 18 Old 07-03-2018, 03:55 PM
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BN are pretty quick if they want to be, more robust than any tetra I've seen, and also great at hiding - really good at getting into small spaces... not to mention, unless you get a longfin bristlenose - which it certainly sounds like the OP didnt get - they have short fins... so *shrug* I really dont see your point in all honesty. :)

As for acclimation, we dont know what the OP has done. So we cant really comment for reccomendations until they post. Its like placing the wagon in front of the cart. ;)


I also disagree with you on that method, since opening the bag will just result in increasing O2 that was previously depleted and rapidly increasing pH - thus ammonium quickly being converted into toxic ammonia. Likewise, it takes in excess of a week for the fish to properly acclimatise to water parameters (such as pH) other than temperature, so adding water is essentially doing moot biologically speaking. A quick acclimation to temperature and then netting - I tend to prefer using my hands as to help prevent torn fins, and wear on the slime coat like a net would... - the fish out and adding to the tank is certainly suffice and highly reccomended by many... including myself. Likewise, it also helps to avoid cross contamination of water - reduce any pathogens entering your aquarium, so fish store water is not introduced to your home aquarium...

Likewise, a quarentine never hurts!

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ok i will let you win this one lol. i just got to looking at my fish and used them as a reference but i forgot that every fish is different (iv'e always been to lazy to do the whole 15 minute water thing XD) i do also agree with quarentine as far too many people leave it out of everything.

Over Stocking Only Becomes A Problem For The Fish When They Can Feel It, But It Becomes Your Problem When They Feel It.
-TheGreatSlayer

Last edited by TheGreatSlayer; 07-03-2018 at 03:59 PM.
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post #10 of 18 Old 07-04-2018, 12:16 AM Thread Starter
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Glad
As for the death of the BN, there maybe numerous factors of why it is the case. It could be stress, could be poor stock- purchased a sick fish - or poor water quality. The most logical IMO is water quality, BN are rather hardy and have thick plating with means they can hold their own. In saying that a baby BN is likely not to do well in poor conditions, so do you happen to know your ammonia, nitrite and nitrate levels of the tank? And Im sure you acclimated the BN to the tank, but how exactly did you acclimatise the fish to the tank - did you float the bag for a minute, add water, not add water, do a rain dance ect..? ;)

If it is indeed the tiger barbs, adding more can help diffuse aggression so they focus more on each other in the school rather than their tank mates. In saying that, if it is indeed the barbs hurting other fish your black neons would also become victim at some point (basically its unlikely its the barbs fault, even if they do seem to be the culprit).

I dont think it was wrong to get tiger barbs - they are fantastic fish to keep and would love to get a few - but you do have to be aware that they need a specialised environment - like you cant go out and get a longfin fish and plop it in there thinking that everything will be fine and it *will* work out.

Consider next time to acclimatise new fish with the lights turned off - and even potentually room lights dimmed - to simulate night so the new fish isn't a big visual aid of 'check me out' and to let them get established a couple of hours before hand?

Depending on the setup, the tank may also appreciate a few more decorations to allow plenty of hiding spots and reduce line of sight.

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