Fish Tank (31122-1) is a Creator 3-in-1 LEGO set released in 2021 with 352 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Creator 3-in-1 sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 118 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2021 (5 years ago — may be retired)
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Catalog scale
352 parts listed · 118 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Shipping weight (est.)
~538 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
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Market value
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Building instructions
3 official booklets — read on BrickID
Book 1 of 3 · US Letter Book 2 of 3 · US Letter Book 3 of 3 · US Letter
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Parts in this set
118 parts · page 1 of 3 · updating…
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Antenna 1 x 4 with Flat Top3957b · ×3 · Trans-Clear -
![Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]](https://cdn.rebrickable.com/media/parts/elements/4289542.jpg)
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]48729b · ×2 · Dark Bluish Gray -
Bracket 1 x 1 - 1 x 136841 · ×3 · White -
Bracket 1 x 1 - 1 x 1 Inverted36840 · ×5 · Black -
Bracket 1 x 2 - 1 x 299781 · ×6 · Blue -
Bracket 1 x 2 - 1 x 299781 · ×8 · Dark Bluish Gray -
Bracket 1 x 2 - 1 x 2 Inverted99780 · ×6 · Red -
Bracket 1 x 2 - 1 x 2 Inverted99780 · ×10 · Dark Azure -
![Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]](https://cdn.rebrickable.com/media/parts/elements/6168615.jpg)
Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]28802 · ×2 · Light Bluish Gray -
Bracket 1 x 2 - 2 x 244728 · ×18 · Black -
Bracket 1 x 2 - 2 x 2 Inverted99207 · ×30 · Blue -
Brick 1 x 13005 · ×2 · Yellow -
Brick 1 x 126112 · ×6 · Black -
Brick Arch 1 x 3 x 288292 · ×1 · Black -
Brick Arch 1 x 3 x 2 Curved Top6005 · ×1 · Black -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×2 · Blue -
Brick Curved 1 x 2 x 1 1/3 with Curved Top6091 · ×2 · Yellow -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6034044.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · White -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6132918.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · Dark Pink -
![Brick Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6029947.jpg)
Brick Curved 2 x 1 No Studs [1/2 Bow]11477 · ×3 · Yellow -
Brick Curved 3 x 1 No Studs50950 · ×1 · Black -
Brick Curved Inverted 2 x 124201 · ×1 · Bright Pink -
Brick Curved Inverted 4 x 113547 · ×1 · Yellow -
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end25214 · ×1 · Yellow -
Brick Round 1 x 1 Open Stud3062b · ×5 · Trans-Clear -
Brick Round 1 x 1 Open Stud3062b · ×5 · Tan -
Brick Round 2 x 2 Dome Top, Hollow Stud30367c · ×1 · Tan -
Brick Round 2 x 2 Dome Top, Hollow Stud30367c · ×1 · Trans-Clear -
Brick Round 2 x 2 Truncated Cone98100 · ×1 · Dark Turquoise -
Brick Round 2 x 2 Truncated Cone98100 · ×1 · Dark Pink -
Brick Round 2 x 2, Pin Holes17485 · ×2 · Yellow -
Brick Round 3 x 3 Dome with Center Stud49308 · ×1 · Magenta -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×5 · Orange -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×3 · Yellow -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · Trans-Dark Pink -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · Black -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×1 · White -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×2 · Blue -
Brick Sloped 30° 1 x 2 x 2/385984 · ×4 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×1 · Yellow -
Brick Sloped 45° 2 x 23039 · ×3 · Dark Bluish Gray -
Brick Sloped 65° 2 x 1 x 260481 · ×5 · Light Aqua -
Brick Sloped Inverted 45° 2 x 13665 · ×1 · Yellow -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366026.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×1 · Black -
Brick Sloped Inverted 45° 4 x 1 Double with 1 x 2 Recessed32802 · ×2 · Black -
Brick Special 1 x 1 Studs on 4 Sides4733 · ×1 · Dark Bluish Gray -
Brick Special 1 x 1 Studs on 4 Sides4733 · ×1 · Lime -
Brick Special 1 x 1 with Headlight4070 · ×1 · Orange