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The End-All Mini Monster Thread

Nice kilis. Great photos.
 
I had a pair, but gave it away. They really are that colorful all the time. They will also eat fish at least half their size, and their mouths open wider than their bodies.
 
scientific name: aphyosemion australe

common name: lyretail killifish, gold australe, orange australe, (and more)

care level: very easy

adult size range: 1.5-2 inches

pH: prefers 5.5-7, can adapt to (and breed in) higher ph

temperature: low to mid 70's

origin/distribution: parts of Gabon and the Gabon-Congo border

temperament: conspesifically aggressive, males will fight for females and territory, but said fights usually don't end in injury.
other than that they are mostly peaceful

compatible tankmates: anything that won't eat them and isn't small enough to be eaten (or isn't a small invertebrate/snail)

diet: prefers live invertebrates but will take dry or frozen foods consisting of said invertebrates. will also eat small snails

minimum tank size for adult: 10 gallon, can be bred in smaller

narrative: it is (apparently) advised to keep multiple females to a male, however my pair is doing fine in their 10 gallon. the main cause for alarm is the male chasing the female in hopes of mating too much, sort of like with guppies, but i haven't seen any of that with my pair. in fact, the female follows the male around the tank, but still sometimes, the other way around. the male will do his little display for her and all, she won't be interested and they'll go their separate ways (for a bit), then go back to their normal routines.
finding something they'd eat was quite a chore, i tried feeding them dry foods like insect based fry foods, krill based flakes, bug bites, and a tiny sample pellet i got somewhere. i have concluded that while they will take tiny foods like fry foods, they will always prefer live or frozen invertebrates. they did also eat the snails that hitchhiked on some of the plants.

other notes: this species comes in a variety of colors, mostly regional variants. some include the "orange australe", "gold australe", and "chocolate".

references: my experience + seriouslyfish, also piscavore's format

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mottled.jpg

Scientific Name: Cottus bairdi

Common name: Mottled Sculpin

Care Level: moderate

Size: 3-4"

pH and KH range: pH 7.0

Temperature range: 40-62*F

Origin: North America, shallow streams with a fairly fast current and highly oxygenated

Temperament: territorial, especially among other sculpins

Compatible Tankmates: daces, shiners, etc.

Diet: Carnivore. Insect larvae, smaller fish, crayfish

Tank Size for Adult: 10 gallon

Narrative: An oddball North American native species. They like cold waters with a currents, similar to trout environments. The water must be highly oxygenated. For a substrate, use round river stones with larger ones on top for shelter.

References: http://www.rook.org/earl/bwca/nature/fish/cottusbairdi.html
http://www.nativefish.org/articles/goodbad.php
You should have chiller for this fish.It is fish for keeping only during winter,autumn in unheated room.simillar problem i had with EUROPEAN SCULPIN...
 
Dwarf-Redtail-Barracuda.jpg


Acestrorhynchus nasutus/isaline *

Common name: Dwarf redtail barracuda, Dwarf freshwater barracuda

Care Level: Moderate/Advanced

Size: Up to 10-15cm (Reported "max" varies by source)

pH and KH range:
6.5-7.2 pH
18-215 ppm GH
KH unspecified

Temperature range: 24-28c (76-82f)

Origin: Brazil/Guyana

Temperament: Peaceful towards anything too large to be considered prey, can be extremely timid.

Compatible Tankmates: Should be kept in groups of similarly sized fish, will cannibalize much smaller individuals. Other species should be peaceful fish that are too big for them to eat. Dwarf redtail barracudas are very timid and will be stressed out by any bolder tankmates. Other large Characins are a good choice.

Diet: They are most inclined to take live fish, may be possible to wean onto frozen/prekilled fish.

Tank Size for Adult: Minimum 40gal long for a small group, longer tanks are more appreciated. They are fast swimmers and skittish fish, a smaller space can result in a lot of ramming into glass.

Narrative: Freshwater barracudas small enough to be kept in a 40 gallon! Fast and active swimmers who will appreciate lots of open space to swim (though should have some areas of cover). They seem to be fairly hardy, but their skittishness and specific dietary needs can make these a difficult fish to feed. According to Tom Lorenz, they are most susceptible to parasites and fin rot, which can be prevented/treated by quarantining feeder fish and quickly treating at the first sign of fin rot.

References: (Will add actual links once my account allows) Opefe Archives "Keeping Freshwater Barracudas" by Tom Lorenz, Seriouslyfish "Acestrorhynchus isalineae Species Profile", Fishbase "Acestrorhynchus nasutus", Fishbase "Acestrorhynchus isalineae", aqua-imports "Dwarf Redtail Barracuda (Acestrorhynchus nasutus)"

*The information on specific dwarf Acestrorhynchus seems to vary wildly, and there seems to be debate about whether captive dwarf redtail barracudas are nasutus, insaline, both, or neither. I've seen some sources describe nasutus as maxing at 5cm, other sources describing it maxing at 40cm, but it seems like whichever species is sold in captivity maxes out at around 15cm.
 
African-Dwarf-Pike-Characin-1.jpg


Phago loricatus

Common Name:
African Dwarf Pike Characin, African Pike-Characin

Care Level:
Easy

Size:
16.5cm (6.5")

pH and KH range:

7-8pH
KH not specified

Temperature range:
24-27c (76-80f)

Origin:
Nigeria

Temperament:
EXTREMELY aggressive.

Compatible Tankmates:
Will eat or maul tankmates of any size. May be able to keep with conspecifics, though so far the only testimony I've read of someone keeping several ended in them having one.

Diet:
Live. Prefers live fish, but should take live crickets and similar.

Tank Size for Adult:
10g

Narrative:
A rare find, but unique and interesting to keep. I have not seen any other fish be described as "extremely aggressive" with this much consistency; for even the most aggressive fish there's usually that odd testimony about someone managing to raise an oscar with a goldfish or something, but I have yet to find a testimony from a single person that had any success keeping any other fish with these for longer than 24hrs. In the wild they are considered ectoparasites, as their feeding habits involve ambushing fish much larger than them and biting a chunk out of them. Anything not big enough to fit in its mouth.. will be chewed to pieces anyways. Its intense aggression does make this a very easy to feed fish as long as you can supply it with anything that moves. While they are 6.5" long they are extremely slender and mostly tail, so 10g is the minimum I've seen listed most. I can't attest to how active of swimmers they are, but considering the lifestyle of these monsters I imagine they might appreciate a longer tank if provided.

References:
(Will add links once enabled on account) Keeping account from user 'guppy' & 'Geordie John', fishbase "Phago loricatus", aqua-imports "African Dwarf Pike Characin"
 
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