Additional stocking for 25 gallons- CPD?

[Byron]

GH is now stated as 150 ppm (= mg/l), which equates to 8 dGH for those of us who prefer the smaller numbers, lol. That is on the soft side, so you still have a number of options here.

I missed earlier, but seangee caught it...add a few more of the present rasboras, six is a pretty small group for this tiny fish, another six would be good. Then you/we go from there.

 

[Willbacon23]

GH is now stated as 150 ppm (= mg/l), which equates to 8 dGH for those of us who prefer the smaller numbers, lol. That is on the soft side, so you still have a number of options here.

I missed earlier, but seangee caught it...add a few more of the present rasboras, six is a pretty small group for this tiny fish, another six would be good. Then you/we go from there.

Are the glowlight danios the same as rasboras? Sorry I’m just from the UK so I don’t know if the names are the same

 

[Byron]

Are the glowlight danios the same as rasboras? Sorry I’m just from the UK so I don’t know if the names are the same

That was me getting ahead of myself (or behind, however you look at it). These tiny "danio" species are more like "rasboras" in some ways, and it has to do with taxonomy (something I do like to bring into discussions ). The following from my profile of the species may explain it.

The genus Danio now (at the time of writing) holds nineteen valid described species (according to Fishbase) with ten of these reported from Myanmar.​

​

Danio choprae was described by S.L. Hora in 1928. The species epithet honours Dr. B.N. Chopra, and Hora initially published the name with the feminine ending (choprae); the masculine form (choprai) is the correct gender in this case in accordance with the ICZN [International Commission on Zoological Nomenclature]. D. choprai is commonly seen, but the ICZN rules also do not allow for such corrections and the first published name must prevail. Dr. Sven Kullander (2012) redescribed D. choprae in his description of Danio flagrans as a distinct species.​

​

This species was also considered in the genus Brachydanio for a time. This genus was erected by Dr. George S. Meyers (in the early 20th century) when he divided the "Danio" into three genera, Danio, Brachydanio and Daniops. During the latter two decades of the twentieth century, many ichthyologists had doubts about the validity of Brachydanio, and in 2003 Dr. Fang Fang determined that the genus Danio was paraphyletic [Greek para = near and phyle = race], which means the genus contains its most recent common ancestor but does not contain all the descendants of that ancestor. Danio was restricted to the nine species of the Danio dangila group comprised of the smaller-sized species, and the genus name Devario was suggested for the remaining larger-sized species. The former genus Brachydanio was disbanded.​

​

In Joseph S. Nelson's Fishes of the World (2006), Danioninae was listed as a synonym of Rasborinae. It was generally held (though some disagreed) that there are three clades within the genus Danio, and the danionin genera are within the subfamily Rasborinae [having priority over Danioninae] along with several genera of rasborin. The danionins can be classed as a subfamily Danioninae, and this placement increasingly gained credibility and is now accepted as a distinct subfamily from Rasborinae within the Cyprinidae family.​

You have D. choprae, and another six would be highly advisable.

 

[Willbacon23]

That was me getting ahead of myself (or behind, however you look at it). These tiny "danio" species are more like "rasboras" in some ways, and it has to do with taxonomy (something I do like to bring into discussions ). The following from my profile of the species may explain it.

The genus Danio now (at the time of writing) holds nineteen valid described species (according to Fishbase) with ten of these reported from Myanmar.​

​

Danio choprae was described by S.L. Hora in 1928. The species epithet honours Dr. B.N. Chopra, and Hora initially published the name with the feminine ending (choprae); the masculine form (choprai) is the correct gender in this case in accordance with the ICZN [International Commission on Zoological Nomenclature]. D. choprai is commonly seen, but the ICZN rules also do not allow for such corrections and the first published name must prevail. Dr. Sven Kullander (2012) redescribed D. choprae in his description of Danio flagrans as a distinct species.​

​

This species was also considered in the genus Brachydanio for a time. This genus was erected by Dr. George S. Meyers (in the early 20th century) when he divided the "Danio" into three genera, Danio, Brachydanio and Daniops. During the latter two decades of the twentieth century, many ichthyologists had doubts about the validity of Brachydanio, and in 2003 Dr. Fang Fang determined that the genus Danio was paraphyletic [Greek para = near and phyle = race], which means the genus contains its most recent common ancestor but does not contain all the descendants of that ancestor. Danio was restricted to the nine species of the Danio dangila group comprised of the smaller-sized species, and the genus name Devario was suggested for the remaining larger-sized species. The former genus Brachydanio was disbanded.​

​

In Joseph S. Nelson's Fishes of the World (2006), Danioninae was listed as a synonym of Rasborinae. It was generally held (though some disagreed) that there are three clades within the genus Danio, and the danionin genera are within the subfamily Rasborinae [having priority over Danioninae] along with several genera of rasborin. The danionins can be classed as a subfamily Danioninae, and this placement increasingly gained credibility and is now accepted as a distinct subfamily from Rasborinae within the Cyprinidae family.​

You have D. choprae, and another six would be highly advisable.

That’s so interesting perfect I will do that. Is there any other fish you would recommend I could bring in, that would inhibit that upper to middle tier, as I haven’t had a fish yet that has done it

 

[Byron]

That’s so interesting perfect I will do that. Is there any other fish you would recommend I could bring in, that would inhibit that upper to middle tier, as I haven’t had a fish yet that has done it

Yes, the GH is suited to more than we at first thought. What are the tank dimensions (length and width is all we need here)?

 

[Willbacon23]

Yes, the GH is suited to more than we at first thought. What are the tank dimensions (length and width is all we need here)?

That’s amazing to hear! My tank is 70x35x45 cm. I currently have 9 corys and 6 glowlight danio as mentioned ( just mentioning so I don’t overstock my tank).

 

[Willbacon23]

Yes, the GH is suited to more than we at first thought. What are the tank dimensions (length and width is all we need here)?

Any suggestion/ personal experience with the fish will be really appreciated from people who have so much more experience in the hobby!

 

[Byron]

That’s amazing to hear! My tank is 70x35x45 cm. I currently have 9 corys and 6 glowlight danio as mentioned ( just mentioning so I don’t overstock my tank).

First, six more of the danios (got it this time!). For the surface, you could consider the marble hatchetfish (Carnegiella strigata), or the related Black-wing Hatchetfish C. marthae. The hatchets in this genus are smaller and well suited to a quiet tank, but you do need some floating plants like Water Sprite, or Amazon Frogbit. The rocket pencilfish Nannostomus eques is a surface fish, cruising all day around the dangling roots of floating plants. Both of these are quiet fish, and very peaceful.

There are some smaller and fairly peaceful gourami. Pygmy sparkling gourami (Trichopsis pumila) in a group of five; this gourami always fares better in a small group. The males "croak" which is an audible sound made by their pectoral fins like a rapid series of clicks, when excited and during courtship, and these can easily be heard outside the aquarium. In a 1992 study, Friedrich Ladich et.al. determined that this sound is important not only in breeding displays but also in antagonistic displays of males to establish dominance. The "croak" is a series of double pulses generated by rapid beating of the pectoral fins. Their "dominance" rarely if ever results in physical harm.

 

[Willbacon23]

First, six more of the danios (got it this time!). For the surface, you could consider the marble hatchetfish (Carnegiella strigata), or the related Black-wing Hatchetfish C. marthae. The hatchets in this genus are smaller and well suited to a quiet tank, but you do need some floating plants like Water Sprite, or Amazon Frogbit. The rocket pencilfish Nannostomus eques is a surface fish, cruising all day around the dangling roots of floating plants. Both of these are quiet fish, and very peaceful.

There are some smaller and fairly peaceful gourami. Pygmy sparkling gourami (Trichopsis pumila) in a group of five; this gourami always fares better in a small group. The males "croak" which is an audible sound made by their pectoral fins like a rapid series of clicks, when excited and during courtship, and these can easily be heard outside the aquarium. In a 1992 study, Friedrich Ladich et.al. determined that this sound is important not only in breeding displays but also in antagonistic displays of males to establish dominance. The "croak" is a series of double pulses generated by rapid beating of the pectoral fins. Their "dominance" rarely if ever results in physical harm.

I’ve never heard of pencilfish before they sound interesting! Would all of this (if I chose one of those out of hatchetfish oencilfish or Pygmy gouramis) fit in my tank. How many oencilfish should I put in to the tank? I will priorities another 6 glowlight danio, the Pygmy gourami sound really interesting, I’m just worried about overstocking my tank as I’ve been told my tank already is near full stock, however you seem very knowledgeable so I take your word as fact in essence

 

[Byron]

I’ve never heard of pencilfish before they sound interesting! Would all of this (if I chose one of those out of hatchetfish oencilfish or Pygmy gouramis) fit in my tank. How many oencilfish should I put in to the tank? I will priorities another 6 glowlight danio, the Pygmy gourami sound really interesting, I’m just worried about overstocking my tank as I’ve been told my tank already is near full stock, however you seem very knowledgeable so I take your word as fact in essence

I can certainly be wrong as much as anyone, but I am fairly up on these species of fish so you're safe.

The pencilfish and hatchetfish could both be present, they get along fine, I've had these species together for years. A group of 9 of this species of pencilfish, and 9-10 of either hatchetfish species I mentioned. I am a tad uncertain about the sparkling gourami in with these because gourami males are territorial and while this species is not rough it might not take kindly to the pencils and hatchets living in its "space" permanently.

 

[Willbacon23]

I apologise I think I worded that poorly. I mean will any ONE of the fish be added to my tank and my tank not be overstocked(with the 9 corys and soon to be 12 glowlight danios.) I would consider adding for example excitedly either the hatchetfish or the pencilfish in a group of 9, and I’d love to, but I just want to make sure my tank wouldn’t be overstocked as a result

 

[Byron]

The N. eques are shown below in two photos, they do remain close for safety. The two hatchets are also pictured. Both species in one photo, and the other shows the two variants of the Marble species.

 

[Willbacon23]

They do look so cool, I’m gonna research both and then decide from there which to pick if you have any preference I’d be very interested in which as will by my first time having either. I do feel if I do add 10 my tank will be at least nearing max capacity, with 9 corys and the 12 danios, what are your thoughts on the stocking levels

 

[Byron]

I apologise I think I worded that poorly. I mean will any ONE of the fish be added to my tank and my tank not be overstocked(with the 9 corys and soon to be 12 glowlight danios.) I would consider adding for example excitedly either the hatchetfish or the pencilfish in a group of 9, and I’d love to, but I just want to make sure my tank wouldn’t be overstocked as a result

No, it will not be overstocked. I am assuming live plants, even if just floating. And weekly water changes of 50-70%. Nine cories, 12 danios, 9 pencilfish and 9 hatchetfish, just so we are on the same page. If you do the gourami instead of the pencils and hatchets, fiv e of those, and I would look for another upper fish, I'n just leery of combining gourami and other surface fish. Another rasbora that does work with the gourami and the danios is Trigonostigma hengeli, the smallest of the three "Harlequin" rasbora. This fish remains mid-tank, and I have had them in with pygmy gouramis with no issues. A group of 11-12 of these rasboras, with the gourami (5), danios (12) and cories (9).

None of the above is anywhere near close to overstocking. Fish that are compatible, and in decent numbers, have less impact on the biological system than fish that are not.

 

[Byron]

Here's my group of Trigonostigma hengeli, 11 of them, in a 20g tank. These are full grown, I have had them for a year now and I have never known them to get much larger. They do stay together, mid-tank.