Arapaima vs Plecostomus
Arapaima gigas との比較 Hypostomus plecostomus
Taxonomy & Classification
| 属性 | Arapaima | Plecostomus |
|---|---|---|
| 学名 | Arapaima gigas | Hypostomus plecostomus |
| 目 | Osteoglossiformes | Siluriformes |
| 科 | Arapaimidae | Loricariidae |
| Conservation Status | Data Deficient | Least Concern |
Physical Traits
| 属性 | Arapaima | Plecostomus |
|---|---|---|
| 最大体長 | 450.0 cm | 50.0 cm |
| 最大体重 | 200.0 kg | 1.0 kg |
| 体色 | Dark olive-gray to grayish-black back with large scales that become vivid red-orange with black borders on the posterior flanks; belly pale cream; caudal fin reddish and rounded. | Dark brown to grayish-black body densely covered with pale yellowish or cream spots and flecks creating a mottled leopard-like pattern; armor-plated scutes visible; belly is pale tan to cream. |
Habitat & Environment
| 属性 | Arapaima | Plecostomus |
|---|---|---|
| 水質タイプ | Freshwater | Brackish |
| 生息水深 | — | — |
| 分布域 | Restricted to the Amazon River basin in Brazil, Peru, Guyana, and Bolivia. Inhabits flooded várzea lakes, oxbows, and large river channels; surfaces frequently to breathe … | Native to rivers and coastal streams of northeastern South America, from Guyana and Suriname through northern Brazil. Found in rocky river bottoms and estuarine margins; … |
| 生息地 | Floodplain lakes (várzea) and large river channels of the Amazon basin. Slow-moving, shallow, warm freshwater (26-30°C). An obligate air-breather; rises to surface to gulp air. … | Rivers of the Amazon basin, especially the Rio Tapajós and Rio Orinoco. Inhabits clear-water rivers over gravel and rocks; also near submerged wood. Grazes algae … |
Aquarium Suitability
| 属性 | Arapaima | Plecostomus |
|---|---|---|
| 最小水槽サイズ | — | 280 L |
| 水温 | — | 22-28 |
| pH 範囲 | — | 6.5-8.0 |
| 飼育難易度 | — | Easy |
| 気性 | — | Peaceful |
釣り情報
| 属性 | Arapaima | Plecostomus |
|---|---|---|
| ゲームフィッシュ | はい | いいえ |
| ファイト評価 | 10/10 | — |
| 世界記録 | — | — |
| 水銀含有量 | — | — |
Cuisine & Edibility
Arapaima
Large, firm white fillets with a mild, clean flavor and low fat; historically a staple protein in Amazonian communities. Often salted and dried; sustainable harvest is tightly regulated.
Plecostomus
Not consumed — ornamental algae-eating catfish kept as a natural tank cleaner; widely popular in freshwater aquariums for its armored body and bottom-dwelling habits.
Species Overview
Arapaima
The arapaima is one of the largest freshwater fish in the world, reaching up to 4.5 meters. An obligate air-breather, it must surface every 10-20 minutes to gulp air. Its tongue is bony and used to crush prey against the roof of its mouth.
Plecostomus
The common pleco is a large armored catfish native to South America. Often purchased as an algae eater, it can outgrow most home aquariums. Its sucker-like mouth allows it to rasp algae from surfaces and anchor itself in fast-flowing currents.