diff --git a/svg/fish_tail_curved.svg b/svg/fish_tail_curved.svg
new file mode 100644
index 0000000..94c54fe
--- /dev/null
+++ b/svg/fish_tail_curved.svg
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Moho 12.5 build 22414 -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Frame_0" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="720px" height="720px">
+<g id="fish_tail_curved">
+<g id="fish_tail">
+<path fill="#ffffff" fill-rule="evenodd" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 143.905 470.497 C 146.905 491.604 168.014 531.530 189.244 529.575 C 215.576 527.152 228.687 470.574 224.966 444.393 C 221.966 423.286 200.710 388.481 179.627 385.315 C 178.906 385.207 140.184 444.317 143.905 470.497 Z"/>
+<path fill="none" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 210.849 456.962 C 203.831 476.857 196.813 496.751 189.796 516.646 M 199.167 440.350 C 190.551 460.190 181.936 480.031 173.321 499.871 M 186.274 420.387 C 177.558 439.948 168.842 459.510 160.126 479.071 "/>
+<path fill="#ffffff" fill-rule="evenodd" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 338.242 215.210 C 338.884 214.863 395.384 257.303 400.778 283.190 C 405.127 304.062 398.837 348.783 378.206 354.158 C 352.616 360.824 321.064 312.065 315.670 286.178 C 311.321 265.306 319.488 225.350 338.242 215.210 M 129.738 99.748 C 129.123 99.356 69.696 137.589 62.439 163.017 C 56.589 183.519 59.622 228.579 79.809 235.434 C 104.849 243.937 139.851 197.593 147.107 172.164 C 152.957 151.663 147.707 111.221 129.738 99.748 Z"/>
+<path fill="none" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 129.097 177.899 C 114.590 193.216 100.083 208.532 85.576 223.849 M 125.187 157.971 C 109.243 172.588 93.298 187.204 77.354 201.821 M 121.535 134.489 C 105.612 148.810 89.689 163.131 73.767 177.452 M 334.816 293.203 C 349.066 308.936 363.315 324.670 377.565 340.404 M 339.269 267.375 C 354.706 284.594 370.143 301.812 385.580 319.030 M 341.941 246.001 C 357.972 262.032 374.002 278.063 390.033 294.094 "/>
+<path fill="#ffffff" fill-rule="evenodd" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 366.871 81.611 C 293.339 81.584 196.868 81.578 118.744 81.715 C 119.147 343.765 146.962 378.983 185.818 444.617 C 216.620 496.646 281.975 540.496 372.902 537.890 C 505.651 534.084 550.854 446.807 566.834 329.659 C 574.310 274.862 686.847 187.517 653.504 157.009 C 630.015 135.518 565.747 207.604 526.798 206.670 C 487.849 205.735 426.757 130.228 402.620 150.989 C 371.471 177.782 455.902 264.793 471.072 312.729 C 487.320 364.074 475.521 439.969 411.013 441.432 C 356.061 442.678 337.759 373.534 343.920 316.967 C 350.309 258.308 365.191 211.796 366.871 81.611 Z"/>
+<path fill="none" stroke="#000000" stroke-width="4" stroke-linecap="round" stroke-linejoin="round" d="M 534.875 255.396 C 535.717 242.579 536.559 229.761 537.401 216.944 M 551.695 256.602 C 555.828 240.387 559.961 224.171 564.095 207.956 M 566.873 259.373 C 578.136 235.840 589.398 212.307 600.661 188.775 M 584.399 264.607 C 603.619 232.707 622.838 200.807 642.057 168.906 M 517.253 254.171 C 515.956 241.302 514.660 228.433 513.364 215.564 M 498.789 254.530 C 495.165 238.396 491.540 222.262 487.915 206.128 M 482.655 258.155 C 473.342 233.861 464.029 209.566 454.716 185.272 M 467.323 261.798 C 449.656 229.013 431.988 196.227 414.321 163.442 "/>
+</g>
+<g id="specs">
+<path fill="#ff00ff" fill-rule="evenodd" stroke="none" d="M 153.316 90.291 C 153.316 90.317 153.316 350.298 153.316 350.324 C 153.334 350.324 331.065 350.324 331.082 350.324 C 331.082 350.298 331.082 90.317 331.082 90.291 C 331.065 90.291 153.334 90.291 153.316 90.291 Z"/>
+<path fill="#0000ff" fill-rule="evenodd" stroke="none" d="M 242.807 46.116 C 242.808 46.118 251.413 70.213 251.414 70.215 C 251.413 70.215 242.808 62.208 242.807 62.207 C 242.806 62.208 234.201 70.215 234.201 70.215 C 234.201 70.213 242.806 46.118 242.807 46.116 Z"/>
+<path fill="#00ff00" fill-rule="evenodd" stroke="none" d="M 524.129 190.776 C 524.130 190.778 532.857 214.830 532.858 214.832 C 532.857 214.831 524.211 206.868 524.210 206.867 C 524.209 206.868 515.644 214.918 515.643 214.919 C 515.644 214.916 524.128 190.778 524.129 190.776 Z"/>
+<path fill="#ffff00" fill-rule="evenodd" stroke="none" d="M 238.345 517.866 C 238.346 517.864 249.025 494.613 249.026 494.611 C 249.026 494.612 249.588 506.353 249.588 506.354 C 249.590 506.354 261.340 506.639 261.341 506.639 C 261.339 506.640 238.347 517.865 238.345 517.866 Z"/>
+<path fill="#ffff00" fill-rule="evenodd" stroke="none" d="M 490.229 518.068 C 490.227 518.066 479.085 495.034 479.083 495.032 C 479.083 495.033 478.757 506.783 478.757 506.784 C 478.755 506.784 467.013 507.305 467.012 507.305 C 467.014 507.306 490.226 518.067 490.229 518.068 Z"/>
+<path fill="#00ff00" fill-rule="evenodd" stroke="none" d="M 364.946 554.488 C 364.947 554.485 373.674 530.434 373.674 530.432 C 373.674 530.433 365.028 538.396 365.027 538.396 C 365.026 538.396 356.461 530.346 356.461 530.345 C 356.461 530.347 364.945 554.485 364.946 554.488 Z"/>
+<path fill="#00ffff" fill-rule="evenodd" stroke="none" d="M 369.011 78.738 C 369.011 78.739 364.918 90.293 364.918 90.295 C 364.918 90.294 364.143 84.716 364.143 84.715 C 364.143 84.715 358.523 85.087 358.523 85.087 C 358.524 85.086 369.010 78.738 369.011 78.738 Z"/>
+<path fill="#00ffff" fill-rule="evenodd" stroke="none" d="M 115.530 79.120 C 115.530 79.121 120.384 90.378 120.384 90.379 C 120.384 90.378 120.785 84.761 120.786 84.761 C 120.786 84.761 126.417 84.756 126.418 84.756 C 126.417 84.756 115.531 79.121 115.530 79.120 Z"/>
+<path fill="#ff0000" fill-rule="evenodd" stroke="none" d="M 242.807 109.933 C 242.806 109.929 227.992 68.449 227.990 68.445 C 227.992 68.446 242.806 82.230 242.807 82.231 C 242.809 82.230 257.623 68.446 257.624 68.445 C 257.623 68.449 242.809 109.929 242.807 109.933 Z"/>
+</g>
+</g>
+</svg>