The name gives it away. IT Lake Monsters — often shortened simply to IT Lake in online fishing circles — doesn't pretend to be a general-purpose fishery. It is a venue built around a specific vision: a relatively small, carefully managed lake in the Greater Bangkok area stocked almost entirely with large, unusual, and photogenic species from the world's tropical river systems. The emphasis is on the extraordinary rather than the prolific, and the operation reflects that in everything from the number of available swims to the price of a day session.
This is not Bungsamran. The chaos, the crowds, the communal platforms, and the budget pricing of Bangkok's famous catfish factory are absent. What replaces them is a more controlled, quieter, and distinctly more specimen-oriented atmosphere. IT Lake has developed a following among visiting anglers who have already ticked Bungsamran off the list and want something different — fewer fish, fewer people, and a realistic chance at a species that doesn't exist in any fishery in their home country.
How IT Lake Built Its Reputation
IT Lake Monsters established itself in the Bangkok pay-lake scene during the 2000s, positioning itself from early on as a venue for anglers specifically chasing exotic Amazonian and Asian species that weren't available anywhere else in the city. The Amazon redtail catfish (Phractocephalus hemioliopterus) — the orange-tailed South American giant that gives the venue its informal identity — was a core attraction from the beginning, but the stocking programme expanded steadily to include arapaima, alligator gar, and pacu, each of which brings a different tactical challenge and a different kind of spectacle.
The venue's reputation spread internationally through forum posts and then social media, and it now draws a consistent stream of visitors from Europe, Japan, and Australia alongside its Thai regulars. It is smaller and less famous than Gillham's in Krabi, but for anglers limited to the Bangkok area or unwilling to add a domestic flight to their itinerary, IT Lake represents the closest equivalent to a serious exotic-species fishery within reach of the capital.
The Fishing
The Amazon redtail catfish is the venue's signature species and the one most anglers come specifically to target. A native of the Amazon and Orinoco basins, the redtail is immediately recognisable: a powerfully built catfish with a blunt, whiskered head, mottled brown-and-cream flanks, and a vivid red or orange tail that makes it one of the most photogenic freshwater species in the world. Fish at IT Lake run from double-figures up to specimens in the 30–50 kilogram range, and the species is a substantially harder fighter than its Thai catfish counterparts, given to explosive initial runs and deep, dogged resistance.
Arapaima (Arapaima gigas) are present in the lake and represent perhaps the single most sought-after encounter for visiting anglers. The arapaima is among the largest freshwater fish on Earth — specimens in well-managed Thai pay-lakes regularly exceed 100 kilograms — and it is unusual enough in behaviour (it is an obligate air-breather and must surface to gulp air periodically, which is one of the more extraordinary things to witness on a fishing trip) that catching one constitutes a legitimate milestone even for experienced specimen hunters. IT Lake's arapaima are fewer in number than their catfish population, and encounters are not guaranteed, but the venue's careful management and relatively low angling pressure improve the odds compared to more crowded alternatives.
Alligator gar (Atractosteus spatula) add a genuine predator dimension. Gar are ambush hunters, and fishing for them requires a different approach — often deadbait or large lures presented near the surface or mid-water. The species has a reputation for being difficult to hook cleanly due to the bony, elongated jaw, and landing a good alligator gar requires some patience and the right terminal arrangement. The venue staff can advise on appropriate rigs.
Pacu (Colossoma macropomum), the large South American fruit-eating relative of the piranha, complete the Amazon contingent. Pacu are strong fighters on the right tackle and somewhat unpredictable in feeding behaviour — they can be caught on standard paste baits, fruit-based baits, or even surface presentation on appropriate days. The species is popular with visiting anglers looking for something that fights hard without the physical demands of a 60-kilogram catfish.
The lake also holds Siamese carp and a selection of supporting species that arrive in the swim as bonus catches. The primary focus is firmly on the exotic Amazonian fish, and the stocking and management reflects that priority.
Limited swims
IT Lake runs a restricted number of swims compared to larger Bangkok venues. Booking in advance — especially for weekends — is strongly recommended. Check the venue's website for current availability.
Sessions are available as day tickets and overnight packages. Day sessions run during daylight hours; overnight options are available for anglers who want the night-time advantage or who are travelling from a distance and want to maximise time on the water. The session fee typically includes basic rod hire and terminal tackle. Groundbait and additional bait options are available from the on-site shop.
Pricing
Expect to pay from around 2,500 THB per day session at IT Lake Monsters, with overnight packages priced higher — the exact figures should be confirmed directly with the venue as they are subject to change and may vary by season or package. IT Lake sits at a noticeably higher price point than Bungsamran or other general Bangkok pay-lakes, which reflects the species composition, the lower angler capacity, and the more intensive management required to maintain large Amazonian specimens in good condition.
By European or North American standards the pricing remains accessible. By Thai pay-lake standards it is squarely at the premium end of the Bangkok market, and visitors should come with appropriate expectations about what they are paying for: quality of encounter rather than quantity of bites.
Tackle: What's Provided and What to Bring
The venue provides rod-and-reel outfits adequate for the species present. The house rigs are functional and correctly matched to the size of fish in the lake — there is no risk of arriving with nothing and finding yourself under-gunned by the available equipment. That said, visiting anglers with their own tackle almost invariably fish it.
For redtail catfish and arapaima, a heavy braid mainline (65–100 lb) on a robust baitrunner-style reel, matched to a 2.75–3.5 lb test-curve rod of two to two-and-a-half metres, covers most situations. For alligator gar, a different approach is sometimes needed — consult the venue's staff on arrival about the current preferred presentation. Hooks in the 6/0–10/0 range in wide-gape or circle patterns are appropriate across the species list.
Bring your own unhooking mat if you have strong views about fish care — the venue's equipment is adequate but serious anglers often prefer their own. Polarised glasses are useful for spotting arapaima rolling at the surface.
Best Season and Time of Day
IT Lake fishes year-round. The cool season (November through February) tends to produce more consistent sport across all species, and the more comfortable temperatures make an extended session significantly more pleasant. The hot season (March through May) can be productive during early morning and evening windows; midday heat during these months suppresses activity noticeably.
Arapaima are visible at the surface throughout the day when they come up to breathe — this is worth remembering when positioning yourself in the swim. Redtail catfish tend to feed more confidently in lower-light conditions, and sessions that begin at dawn or extend into the evening often produce better results than those focused purely on the midday hours.
Food and Accommodation
There is on-site food service covering Thai staples — the standard combination of rice dishes, grilled proteins, and cold drinks that functions as the backbone of Thai pay-lake catering. The food is simple and sufficient for a day session.
IT Lake does not offer extensive on-site accommodation in the style of a full resort. Overnight session anglers typically manage on mats or basic facilities at the waterside; the venue's own site should be checked for current accommodation arrangements. For anglers wanting a comfortable room, the hotel options in the broader Bangkok area are extensive and the distance from the city centre makes Grab a practical option for the journey to and from the venue.
Getting There from Bangkok
IT Lake Monsters sits in the Greater Bangkok area, accessible from the city centre in roughly an hour to an hour and a half by road, depending on traffic. As with all Bangkok-area destinations, departure time matters — leaving at peak hour can double the estimated journey time.
Grab works reliably for the trip. A private car from central Bangkok should cost in the broad range of 200–400 THB one-way depending on departure point, time, and surge conditions. The venue's location details and any access notes specific to the route are best confirmed on their website before travel.
An Honest Assessment
IT Lake Monsters is the right venue for an angler who has either already fished Bungsamran or who isn't interested in the Bungsamran style of fishing. If you have come to Thailand specifically to catch an arapaima or a redtail catfish — species that genuinely don't exist in recreational fisheries outside tropical Asia and South America — this is the most practical place in the Bangkok area to make that happen.
It is the wrong venue for someone expecting constant action and a buzzing atmosphere. Swims are limited, bites may be less frequent than at a high-density venue, and the experience is more akin to specimen carping than to a Thai bait-fishing factory. There is a patience premium attached to targeting arapaima in particular. Anglers used to constant bites at Bungsamran may find IT Lake frustratingly slow on a bad day.
The venue is also less suited to beginners who need significant guidance — the fish are large enough that some prior experience of playing heavy fish is a genuine advantage, and the day-rate investment makes it a slightly painful introduction if you're still learning the basics. A session at Bungsamran first is rarely a bad idea.
If you have come to Thailand to catch an arapaima, this is the most practical place in the Bangkok area to make that happen.
Where to Fish Next
The natural companion to IT Lake is Gillham's Fishing Resort in Krabi — the venue that takes the same species list and elevates it to world-record territory in a dedicated resort setting. For the contrast of Bangkok bait-fishing at its most social and accessible, Bungsamran Lake is the reference point the entire scene is built around. Learn more about the species you targeted today: arapaima, Amazon redtail catfish, and alligator gar each have dedicated species pages covering biology, tackle, and what to expect from a Thai encounter.
