Daphnia magna

Fish family:

Daphnia magna is probably the most common species in the aquarium hobby.  It has been a favourite live food source since the hobby began. Daphnia magna are the largest member of the Daphnia family with males reaching 2 mm in length and females in the 3 – 5 mm range. They vary in color from a pale yellow to salmon-pink, and this is typically affected by their food source. Daphnia magna has a wide temperature tolerance, but favor cooler temperatures between 64°F / 18°C and 72°F / 22°C.

The life span of Daphnia, from the release of the egg into the brood chamber until the death of the adult, is highly variable depending on the species and environmental conditions (Pennak, 1978). Generally the life span increases as temperature decreases, due to lowered metabolic activity. The average life span of D. magna is about 40 days at 77°F / 25°C  and about 56 days at 68°F / 20°C.

The nutritional content of Daphnia varies considerably depending on their age and the type of food they are receiving. Although variable, protein content usually averages 50% of the dry weight. Adults normally have a higher fat content than juveniles. The total amount of fat per dry weight is 20 – 27% for adult females and 4 – 6% for juveniles.

Price & Availability

Sorry, these are currently Out of Stock.

Hypancistrus Zebra

Fish family:
Fish Genus:

Origin:

The Hypancistrus Zebra comes from the Rio Xingú river in South America. The Rio Xingú flows through Brazil and then into the mighty Amazon river.

The area of the Rio Xingú where this fish lives in the wild is full of different sized rocks with some fine sand on the river bottom.

Size

80mm (3.1 inches). Standard Length

Comments

If these guys were not so shy, they could easily be one of my favorite aquarium fish!

Care Info

For a rare and beautiful fish, Hypancistrus Zebra is not demanding to keep. They like to be warm with water temperatures in the mid 80’s, and they enjoy meaty foods rather than a diet of plant material.

Spawning Info

My fish are too young to spawn, so I have no first hand info.

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Young Zebra Plecos
Photo by Dennis Ball

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Moina

Fish family:

Moina are are the smallest member of the daphnia family.  Adult Moina (700-1,000 µm) are longer than newly-hatched brine shrimp (500 µm) and approximately two to three times the length of adult rotifers. Young Moina (less than 400 µm), however, are approximately the same size or only slightly larger than adult rotifers and smaller than newly-hatched brine shrimp.

Under optimum conditions, Moina reproduce at only 4-7 days of age, with a brood size of 4 – 22 per female. Broods are produced every 1.5 – 2.0 days, with most females producing 2 – 6 broods during their lifetime.

The nutritional content of Daphnia varies considerably depending on their age and the type of food they are receiving. Although variable, the protein content of Moina usually averages 50% of the dry weight. Adults normally have a higher fat content than juveniles. The total amount of fat per dry weight is 20 – 27% for adult females and 4 – 6% for juveniles. That said, Moina are generally believed to have a higher protein content, often as high as 70% protein.

Price & Availability

Sorry, these are currently Out of Stock.

Devario pathirana

Fish family:
Fish Genus:

Origin

Danio xxx were first collected in xxxx in south-western Thailand by Mr. A. F. G. Kerr and are named in his honor in 1931 by H.M. Smith when the fish were officially described.

The species was described from fish collected in a hill stream, Koh Yao Yai (island), Phuket, Thailand. They are also known to be found in similar habitat in the Malay Peninsula from southern Thailand (Krabi and Ranong provinces) to Malaysia. The species has also been found on the other islands in the area including Phuket, Ko Lanta and Langkawi.

These fish typically inhabit submontane streams to hillstreams in forest areas and small rivers typified by very clear water with substrates of rocks, boulders and gravel.

Size

xxmm (xx inches). Standard Length

Comments

One of my favorite Danios!

Care Info

Like a good many of the other Danios, these fish are very hardy and undemanding in the aquarium.

Spawning Info

These fish are very prolific.

 

Price & Availability

Devario xyrops

Fish family:
Fish Genus:

Origin

xxx were first collected

Size

xxmm (xx inches). Standard Length

Comments

One of my favorite Danios!

Care Info

Like a good many of the other Danios, these fish are very hardy and undemanding in the aquarium.

Spawning Info

F1 Devario xyrops
Photo by Dennis Ball

Starting with only 4 fish, I consider myself very luck to have spawned these fish.

 

Price & Availability

Marble Crayfish

Fish family:

Marmorkrebs, or marbled crayfish, are parthenogenetic crayfish that were discovered in the pet trade in Germany in the 1990s.

Price & Availability

Sorry, these are currently Out of Stock.

Corydoras aeneus (green)

Fish family:
Fish Genus:

I got these beauties from Holly over at HCA Aquatics. I had been watching as she sold young fish on Aqua-Bid and when she listed her breeders I knew it was now-or-never if I wanted some for my fish room.

Size

75mm (3 inches). Standard Length

Comments

I’m not normally a big cat fish fan, but what fish room would be complete with some of these fish!

Care Info

These fish are very hardy and undemanding in the aquarium.  I like to keep them in either bare bottom or tanks with sand for substrate. Don’t believe the misconception that these fish will live off of scraps and whatever they can find in your tank. To be healthy and happy they need to be fed just like any other fish. They are not picky eaters and will accept most anything offered.

Spawning Info

There is a wealth of spawning info on these fish available on the Internet. I have found them very easy to spawn once they are mature and well fed.

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Price & Availability

Lots of fry currently growing out. I should have these available in early May.

Corydoras aeneus (albino)

Fish family:
Fish Genus:

While these are truly wonderful fish, I come to have them completely by accident. I was attending the 2013 GCAS fall auction with my good friend Bob Townsend. We had been watching the plecos all day and I was especially keen to get some male albino busy nose. We were talking with GCAS president Phil Benes when some albinos came to the block. They went for a great price and I was very pleased until the runner brought them around and they were albino cories and not plecos!

These fish were described as Hoplosoma aeneum by Theodore Gill in 1858. The original fish were collected at Trinidad Island, West Indies and is often said to range over a large area in South America. Recently this has come into question and it is believed that many similar looking fish have simply been misidentified as Corydoras aeneus.

These fish typically inhabit quiet, shallow waters with soft silt or sand bottoms.

Size

75mm (3 inches). Standard Length

Comments

I’m not normally a big cat fish fan, but what fish room would be complete with some of these fish! Even though I got them by mistake, I have thoroughly enjoyed having them.

Care Info

These fish are very hardy and undemanding in the aquarium.  I like to keep them in either bare bottom or tanks with sand for substrate. Don’t believe the misconception that these fish will live off of scraps and whatever they can find in your tank. To be healthy and happy they need to be fed just like any other fish. They are not picky eaters and will accept most anything offered.

Spawning Info

There is a wealth of spawning info on these fish available on the Internet. I have found them very easy to spawn once they are mature and in good condition.

Albino cory aeneus eggs
Photo by Dennis Ball
24 Hour Old Albino Cory Eggs
Photo by Dennis Ball
2 day old albino cory fry
Photo by Dennis Ball

Price & Availability

Fry are currently growing out. I should have these available in early May.

Devario acrostomus

Fish family:
Fish Genus:

Origin:

These fish are a very new addition to the hobby.   Once again, I was fortunate enough to acquire some of these fish by way of Stephan Tanner of Swiss Tropicals.

This species was described from the Nam Mang drainage, which forms part of the Mekong River drainage in northern Lao PDR (Fang and Kottelat 1999). It was originally described as Danio acrostomus, but was transferred to the genus Devario by Fang (2003).

In the wild, Devario acrostomus inhabits forested streams with clear water and a substrate of large boulders. The fish can be found in habitats within the streams ranging from isolated deep pools to fast-flowing stretches.

Size

80mm (3.15 inches). Standard Length

Comments

These fish are very hard to find in the hobby, but are worth the effort when you get a chance to obtain some. They are large active swimmers, that will eat almost anything offered.

Care Info

Like a good many of the other Danios, these fish are very hardy and undemanding in the aquarium.

Spawning Info

I was very fortunate to pick up a bag of these fish at our local club fall auction in 2013. With lots of live foods and frequent large water changes, they spawned for me within several weeks.

The fish were housed in a tank with a thick growth of vallisneria and this prevented the adults from eating the eggs and the resulting fry.

Devario acrostomus adults
Photo by Dennis Ball

Fry at roughly 3 months of age…..

Acrostomus fry at 3 months
Photo by Dennis Ball

 

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Danio rerio var. Frankei

Leopard Danio (Danio rerio var. Frankei)
Photo by Dennis Ball

Leopard Danios, (Danio rerio var. Frankei), are a hybrid variety of the Zebra Danio (Danio rerio).  As such, they have been in the hobby for many years.

Leopard Danio (Danio rerio var. Frankei)
Photo by Dennis Ball

I purchased my group of fish from a local store called Jack’s Aquarium, but I believe they have since changed their name to Jack’s Pets as they have a variety of pets that they sell.

Leopard Danio (Danio rerio var. Frankei)
Photo by Dennis Ball

My fish are a rich golden color, but I will occasionally get a silvery blue fry and have often though of trying to develop a line of more blue colored fish.