FinsHQ Encyclopedia

Fish & Livestock

Care guides for freshwater fish, marine species, and invertebrates — including water parameters, tank requirements, and where to buy.

5,412 species

Moderate

Iodotropheus sprengerae 'Chinyankwazi'

Iodotropheus sprengerae

9 cm200 L2428°C
intermediate

Iowa Darter

Etheostoma exile

6 cm60 L820°C
advanced

Iquitos Angelfish (Wild)

Pterophyllum scalare

15 cm200 L2528°C
intermediate

Iriatherina Threadfin Rainbowfish

Iriatherina werneri

4 cm40 L2428°C
advanced

Iridescent Shark

Pangasianodon hypophthalmus

130 cm1000 L2226°C
Advanced

Iridescent Shark (Pangasianodon hypophthalmus)

Pangasianodon hypophthalmus

130 cm2000 L2226°C
intermediate

Iridis Wrasse (Halichoeres iridis)

Halichoeres iridis

13 cm150 L2327°C
beginner

Iris Rainbowfish

Melanotaenia iris

7 cm80 L2228°C
advanced

Irritans Piranha

Serrasalmus irritans

30 cm400 L2428°C
intermediate

Irrubesco (Kapuas Form)

Carinotetraodon irrubesco

4 cm40 L2428°C
intermediate

Irrubesco Puffer

Carinotetraodon irrubesco

4 cm40 L2428°C
intermediate

Isbrueckeri Pike Cichlid

Crenicichla isbrueckeri

20 cm200 L1826°C
advanced

Isbrueckerichthys alipionis

Isbrueckerichthys alipionis

6 cm80 L1824°C
intermediate

Isosceles Fairy Wrasse (Cirrhilabrus isosceles)

Cirrhilabrus isosceles

9 cm180 L2427°C
advanced

Itacua Stingray

Potamotrygon itoupava

45 cm500 L2228°C
advanced

Itaituba Stingray

Potamotrygon albimaculata

35 cm400 L2428°C
beginner

Ivory Apple Snail (Pomacea bridgesii var. Ivory)

Pomacea bridgesii var. Ivory

7 cm40 L1828°C
beginner

Ivory Mystery Snail

Pomacea bridgesii (ivory morph)

6 cm40 L1828°C
Easy

Ivory Mystery Snail Pomacea bridgesii White 3-Pack

Pomacea bridgesii

6 cm40 L2228°C
Intermediate

Izumo Nankin Goldfish

Carassius auratus

15 cm100 L1022°C
beginner

Jack Dempsey

Rocio octofasciata

25 cm200 L2228°C
intermediate

Jack Dempsey Cichlid

Rocio octofasciata

25 cm300 L2230°C
beginner

Jade Apple Snail (Pomacea bridgesii var. Jade)

Pomacea bridgesii var. Jade

7 cm40 L1828°C
advanced

Jaguar × Midas Hybrid Cichlid

Parachromis managuensis × Amphilophus citrinellus hybrid

40 cm600 L2428°C
MODERATE

Jaguar Catfish (Liosomadoras oncinus)

Liosomadoras oncinus

25 cm200 L2227°C
advanced

Jaguar Cichlid

Parachromis managuensis

55 cm750 L2430°C
intermediate

Jaguarensis Pike Cichlid

Crenicichla jaguarensis

22 cm220 L1826°C
beginner

Jaintia Hills Danio

Danio jaintianensis

5 cm60 L1825°C
Easy

James' Moenkhausia

Moenkhausia jamesi

7 cm80 L2328°C
intermediate

Janpap's Nothobranch

Nothobranchius janpapi

4.5 cm30 L2226°C
beginner

Janssens' Barb

Barbus janssensi

8 cm80 L2226°C
Intermediate

January Tetra

Hemigrammus hyanuary

4.5 cm80 L2428°C
advanced

Japanese Butterflyfish (Chaetodon nippon)

Chaetodon nippon

15 cm300 L1824°C
beginner

Japanese Medaka

Oryzias latipes

4 cm20 L1628°C
easy

Japanese Medaka (Wild Type)

Oryzias latipes

4 cm20 L1028°C
advanced

Japanese Pygmy Angelfish (Centropyge interruptus)

Centropyge interruptus

15 cm150 L2024°C
beginner

Japanese Rice Fish

Oryzias latipes

4 cm20 L1028°C
advanced

Japanese Sicyopterus Goby

Sicyopterus japonicus

8 cm80 L2026°C
advanced

Japanese Swallow Angelfish (Genicanthus semifasciatus)

Genicanthus semifasciatus

21 cm450 L1824°C
beginner

Japanese Trapdoor Snail

Sinotaia quadrata

5 cm40 L1525°C
advanced

Jardini Arowana

Scleropages jardini

90 cm1500 L2630°C
advanced

Jariina Peacock Bass

Cichla jariina

55 cm700 L2530°C
advanced

Jauruense Twig Catfish

Farlowella jauruensis

16 cm100 L2428°C
EASY

Java Loach (Nemacheilus fasciatus)

Nemacheilus fasciatus

10 cm80 L2026°C
beginner

Javanese Medaka

Oryzias javanicus

3.5 cm30 L2228°C
easy

Javanese Ricefish

Oryzias javanicus

4 cm30 L2228°C
intermediate

Jelly Bean Tetra

Ladigesia roloffi

3 cm40 L2327°C
intermediate

Jellybean Tetra

Lepidarchus adonis

2 cm30 L2327°C
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